{ "document": { "category": "csaf_base", "csaf_version": "2.0", "distribution": { "tlp": { "label": "WHITE" } }, "lang": "en", "notes": [ { "category": "legal_disclaimer", "text": "The Netherlands Cyber Security Center (henceforth: NCSC-NL) maintains this portal to enhance access to its information and vulnerabilities. The use of this information is subject to the following terms and conditions:\n\nThe vulnerabilities disclosed in this portal are gathered by NCSC-NL from a variety of open sources, which the user can retrieve from other platforms. NCSC-NL makes every reasonable effort to ensure that the content of this portal is kept up to date, and that it is accurate and complete. Nevertheless, NCSC-NL cannot entirely rule out the possibility of errors, and therefore cannot give any warranty in respect of its completeness, accuracy or real-time keeping up-to-date. NCSC-NL does not control nor guarantee the accuracy, relevance, timeliness or completeness of information obtained from these external sources. The vulnerabilities disclosed in this portal are intended solely for the convenience of professional parties to take appropriate measures to manage the risks posed to the cybersecurity. No rights can be derived from the information provided therein.\n\nNCSC-NL and the Kingdom of the Netherlands assume no legal liability or responsibility for any damage resulting from either the use or inability of use of the vulnerabilities disclosed in this portal. This includes damage resulting from the inaccuracy of incompleteness of the information contained in it.\nThe information on this page is subject to Dutch law. All disputes related to or arising from the use of this portal regarding the disclosure of vulnerabilities will be submitted to the competent court in The Hague. This choice of means also applies to the court in summary proceedings." } ], "publisher": { "category": "coordinator", "contact_details": "cert@ncsc.nl", "name": "National Cyber Security Centre", "namespace": "https://www.ncsc.nl/" }, "title": "CVE-2026-55040", "tracking": { "current_release_date": "2026-09-07T06:59:14.254897Z", "generator": { "date": "2026-02-17T15:00:00Z", "engine": { "name": "V.E.L.M.A", "version": "1.7" } }, "id": "CVE-2026-55040", "initial_release_date": "2026-07-14T09:06:53.142924Z", "revision_history": [ { "date": "2026-07-14T09:06:53.142924Z", "number": "1", "summary": "NCSC Score created." }, { "date": "2026-07-14T18:00:56.046498Z", "number": "2", "summary": "Source created.| CVE status created. (valid)| Description created for source.| CVSS created.| Products connected (3).| References created (1).| CWES updated (1)." }, { "date": "2026-07-14T18:00:58.325630Z", "number": "3", "summary": "NCSC Score updated." }, { "date": "2026-07-14T18:06:36.638488Z", "number": "4", "summary": "Source connected.| CVE status created. (valid)| News created (1)." }, { "date": "2026-07-14T18:06:38.736370Z", "number": "5", "summary": "NCSC Score updated." }, { "date": "2026-07-14T18:25:35.481353Z", "number": "6", "summary": "Source connected.| CVE status created. (valid)| Description created for source.| CVSS created.| Products connected (3).| Product Threats created (6).| Product Remediations created (3).| CWES updated (1).| Exploitable created." }, { "date": "2026-07-14T18:25:38.898169Z", "number": "7", "summary": "NCSC Score updated." }, { "date": "2026-07-14T18:41:48.848067Z", "number": "8", "summary": "Source created.| CVE status created. (valid)| Description created for source.| CVSS created.| References created (1).| CWES updated (1)." }, { "date": "2026-07-14T18:41:50.870945Z", "number": "9", "summary": "NCSC Score updated." }, { "date": "2026-07-14T18:42:17.801184Z", "number": "10", "summary": "Source connected.| CVE status created. (valid)" }, { "date": "2026-07-14T20:05:02.998528Z", "number": "11", "summary": "Unknown change." }, { "date": "2026-07-15T07:51:31.684060Z", "number": "12", "summary": "Source connected.| CVE status created. (valid)| Products connected (16).| References created (98)." }, { "date": "2026-07-15T07:51:43.262219Z", "number": "13", "summary": "NCSC Score updated." }, { "date": "2026-07-15T08:29:43.804225Z", "number": "14", "summary": "Source connected.| CVE status created. (valid)| News created (1)." }, { "date": "2026-07-15T08:29:46.373618Z", "number": "15", "summary": "NCSC Score updated." }, { "date": "2026-07-15T10:05:24.704700Z", "number": "16", "summary": "Source connected.| CVE status created. (valid)| News created (1)." }, { "date": "2026-07-17T08:30:51.212432Z", "number": "17", "summary": "Source connected.| CVE status created. (valid)| News created (1)." }, { "date": "2026-07-17T08:30:56.462421Z", "number": "18", "summary": "NCSC Score updated." }, { "date": "2026-07-17T09:06:24.365665Z", "number": "19", "summary": "Products connected (3).| Product Identifiers created (3)." }, { "date": "2026-07-17T09:06:28.625941Z", "number": "20", "summary": "NCSC Score updated." }, { "date": "2026-07-17T10:14:38.652601Z", "number": "21", "summary": "Source connected.| CVE status created. (valid)| EPSS created." }, { "date": "2026-07-17T10:14:47.221974Z", "number": "22", "summary": "NCSC Score updated." }, { "date": "2026-07-17T10:26:51.248524Z", "number": "23", "summary": "References created (1)." }, { "date": "2026-07-19T10:27:36.655830Z", "number": "24", "summary": "NCSC Score updated." }, { "date": "2026-07-24T14:29:14.898667Z", "number": "25", "summary": "EPSS updated." }, { "date": "2026-07-24T14:29:24.957866Z", "number": "26", "summary": "NCSC Score updated." }, { "date": "2026-07-30T16:21:29.017395Z", "number": "27", "summary": "EPSS updated." }, { "date": "2026-07-31T14:31:12.298531Z", "number": "28", "summary": "NCSC Score updated." }, { "date": "2026-08-11T14:29:45.481214Z", "number": "29", "summary": "Source created.| CVE status created. (valid)| News created (1)." }, { "date": "2026-08-11T14:29:50.565610Z", "number": "30", "summary": "NCSC Score updated." }, { "date": "2026-08-11T15:18:39.829083Z", "number": "31", "summary": "Source connected.| CVE status created. (valid)| EPSS created." }, { "date": "2026-08-12T09:06:40.593308Z", "number": "32", "summary": "References created (1)." }, { "date": "2026-08-12T13:05:36.555691Z", "number": "33", "summary": "Source created.| CVE status created. (valid)| News created (1)." }, { "date": "2026-08-12T15:30:41.652736Z", "number": "34", "summary": "Source created.| CVE status created. (valid)| News created (1)." }, { "date": "2026-08-13T04:40:06.499408Z", "number": "35", "summary": "Unknown change." }, { "date": "2026-08-13T08:29:51.467263Z", "number": "36", "summary": "Source created.| CVE status created. (valid)| News created (1)." }, { "date": "2026-08-13T14:21:27.173625Z", "number": "37", "summary": "NCSC Score updated." }, { "date": "2026-08-13T14:26:47.851945Z", "number": "38", "summary": "References created (2)." }, { "date": "2026-08-13T14:39:53.760946Z", "number": "39", "summary": "Exploits created (1).| References created (1)." }, { "date": "2026-08-13T14:39:56.251153Z", "number": "40", "summary": "NCSC Score updated." }, { "date": "2026-08-13T15:24:34.467096Z", "number": "41", "summary": "EPSS updated." }, { "date": "2026-08-13T15:24:36.779674Z", "number": "42", "summary": "NCSC Score updated." }, { "date": "2026-08-13T19:15:43.659979Z", "number": "43", "summary": "NCSC Score updated." }, { "date": "2026-08-14T15:23:21.663152Z", "number": "44", "summary": "EPSS updated." }, { "date": "2026-08-18T18:07:35.295572Z", "number": "45", "summary": "Source connected.| CVE status created. (valid)| Description created for source.| Products connected (1).| Exploits created (1).| References created (2).| CWES updated (1)." }, { "date": "2026-08-18T18:25:22.059261Z", "number": "46", "summary": "References created (1)." }, { "date": "2026-08-18T18:39:15.282992Z", "number": "47", "summary": "References created (1).| Unknown change." }, { "date": "2026-08-18T18:47:31.689841Z", "number": "48", "summary": "Source connected.| CVE status created. (valid)| Description created for source.| CVSS created.| Products connected (3).| Exploits created (1).| References created (1).| Exploitable created." }, { "date": "2026-08-18T20:24:56.000402Z", "number": "49", "summary": "Exploits created (2)." }, { "date": "2026-08-18T20:25:05.288999Z", "number": "50", "summary": "NCSC Score updated." }, { "date": "2026-08-19T11:30:40.379275Z", "number": "51", "summary": "Source connected.| CVE status created. (valid)| News created (1)." }, { "date": "2026-08-19T11:30:51.130712Z", "number": "52", "summary": "NCSC Score updated." }, { "date": "2026-08-19T15:17:56.653475Z", "number": "53", "summary": "EPSS updated." }, { "date": "2026-08-19T15:17:58.409157Z", "number": "54", "summary": "NCSC Score updated." }, { "date": "2026-08-21T12:29:38.175450Z", "number": "55", "summary": "NCSC Score updated." }, { "date": "2026-08-24T18:17:48.676844Z", "number": "56", "summary": "NCSC Score updated." }, { "date": "2026-08-26T15:05:18.518446Z", "number": "57", "summary": "Source created.| CVE status created. (valid)| News created (1)." }, { "date": "2026-08-26T15:05:28.749493Z", "number": "58", "summary": "NCSC Score updated." }, { "date": "2026-08-27T09:30:54.248888Z", "number": "59", "summary": "Source created.| CVE status created. (valid)| News created (1)." }, { "date": "2026-08-27T12:17:58.949220Z", "number": "60", "summary": "NCSC Score updated." }, { "date": "2026-08-27T13:18:26.059283Z", "number": "61", "summary": "NCSC Score updated." }, { "date": "2026-08-28T13:17:53.016085Z", "number": "62", "summary": "NCSC Score updated." }, { "date": "2026-09-02T10:27:55.083185Z", "number": "63", "summary": "EPSS updated." }, { "date": "2026-09-03T00:27:24.629640Z", "number": "64", "summary": "NCSC Score updated." }, { "date": "2026-09-03T14:17:32.557211Z", "number": "65", "summary": "EPSS updated." }, { "date": "2026-09-03T18:41:57.651005Z", "number": "66", "summary": "EPSS updated." }, { "date": "2026-09-04T15:26:14.114633Z", "number": "67", "summary": "EPSS updated." }, { "date": "2026-09-05T04:49:40.847865Z", "number": "68", "summary": "NCSC Score updated." }, { "date": "2026-09-05T15:25:31.668531Z", "number": "69", "summary": "EPSS updated." }, { "date": "2026-09-06T15:25:56.737068Z", "number": "70", "summary": "EPSS updated." } ], "status": "interim", "version": "70" } }, "product_tree": { "branches": [ { "branches": [ { "branches": [ { "category": "product_version_range", "name": "vers:unknown/2016", "product": { "name": "vers:unknown/2016", "product_id": "CSAFPID-2796", "product_identification_helper": { "cpe": "cpe:/a:microsoft:excel:2016" } } } ], "category": "product_name", "name": "Excel" }, { "branches": [ { "category": "product_version_range", "name": "vers:unknown/unknown", "product": { "name": "vers:unknown/unknown", "product_id": "CSAFPID-1430029", "product_identification_helper": { "cpe": "cpe:/a:microsoft:365_apps:-" } } } ], "category": "product_name", "name": "Microsoft 365 Apps" }, { "branches": [ { "category": "product_version_range", "name": "vers:unknown/unknown", "product": { "name": "vers:unknown/unknown", "product_id": "CSAFPID-1776528", "product_identification_helper": { "cpe": "cpe:/a:microsoft:office_online_server:-" } } } ], "category": "product_name", "name": "Microsoft Office Online Server" }, { "branches": [ { "branches": [ { "category": "product_version_range", "name": "vers:microsoft/*", "product": { "name": "vers:microsoft/*", "product_id": "CSAFPID-5137201", "product_identification_helper": { "cpe": "cpe:2.3:a:microsoft:sharepoint_server_2016:*:*:*:*:enterprise:*:*:*" } } } ], "category": "product_name", "name": "Microsoft SharePoint Enterprise Server 2016" }, { "branches": [ { "category": "product_version_range", "name": "vers:microsoft/*", "product": { "name": "vers:microsoft/*", "product_id": "CSAFPID-5137202", "product_identification_helper": { "cpe": "cpe:2.3:a:microsoft:sharepoint_server_2019:*:*:*:*:*:*:*:*" } } } ], "category": "product_name", "name": "Microsoft SharePoint Server 2019" }, { "branches": [ { "category": "product_version_range", "name": "vers:microsoft/unknown", "product": { "name": "vers:microsoft/unknown", "product_id": "CSAFPID-1429583", "product_identification_helper": { "cpe": "cpe:2.3:a:microsoft:sharepoint_server:-:*:*:*:subscription:*:*:*" } } } ], "category": "product_name", "name": "Microsoft SharePoint Server Subscription Edition" } ], "category": "product_family", "name": "Microsoft Office" }, { "branches": [ { "category": "product_version_range", "name": "vers:unknown/16.0.0|<16.0.5561.1001", "product": { "name": "vers:unknown/16.0.0|<16.0.5561.1001", "product_id": "CSAFPID-8808587" } }, { "category": "product_version_range", "name": "vers:unknown/unknown", "product": { "name": "vers:unknown/unknown", "product_id": "CSAFPID-8023665" } } ], "category": "product_name", "name": "Microsoft SharePoint Enterprise Server 2016" }, { "branches": [ { "category": "product_version_range", "name": "vers:unknown/16.0.0|<16.0.10417.20175", "product": { "name": "vers:unknown/16.0.0|<16.0.10417.20175", "product_id": "CSAFPID-8808588" } }, { "category": "product_version_range", "name": "vers:unknown/unknown", "product": { "name": "vers:unknown/unknown", "product_id": "CSAFPID-1430027", "product_identification_helper": { "cpe": "cpe:/a:microsoft:sharepoint_server_2019:-" } } } ], "category": "product_name", "name": "Microsoft SharePoint Server 2019" }, { "branches": [ { "category": "product_version_range", "name": "vers:unknown/16.0.0|<16.0.19725.20434", "product": { "name": "vers:unknown/16.0.0|<16.0.19725.20434", "product_id": "CSAFPID-8808589" } }, { "category": "product_version_range", "name": "vers:unknown/unknown", "product": { "name": "vers:unknown/unknown", "product_id": "CSAFPID-8023664" } } ], "category": "product_name", "name": "Microsoft SharePoint Server Subscription Edition" }, { "branches": [ { "category": "product_version_range", "name": "vers:unknown/2016", "product": { "name": "vers:unknown/2016", "product_id": "CSAFPID-5467987", "product_identification_helper": { "cpe": "cpe:/a:microsoft:office:2016" } } }, { "category": "product_version_range", "name": "vers:unknown/2019", "product": { "name": "vers:unknown/2019", "product_id": "CSAFPID-5467990", "product_identification_helper": { "cpe": "cpe:/a:microsoft:office:2019" } } }, { "category": "product_version_range", "name": "vers:unknown/for android", "product": { "name": "vers:unknown/for android", "product_id": "CSAFPID-1776524", "product_identification_helper": { "cpe": "cpe:/a:microsoft:office:for_android" } } }, { "category": "product_version_range", "name": "vers:unknown/ltsc 2021", "product": { "name": "vers:unknown/ltsc 2021", "product_id": "CSAFPID-1189244", "product_identification_helper": { "cpe": "cpe:/a:microsoft:office:ltsc_2021" } } }, { "category": "product_version_range", "name": "vers:unknown/ltsc 2024", "product": { "name": "vers:unknown/ltsc 2024", "product_id": "CSAFPID-1305163", "product_identification_helper": { "cpe": "cpe:/a:microsoft:office:ltsc_2024" } } }, { "category": "product_version_range", "name": "vers:unknown/ltsc for mac 2021", "product": { "name": "vers:unknown/ltsc for mac 2021", "product_id": "CSAFPID-1305165", "product_identification_helper": { "cpe": "cpe:/a:microsoft:office:ltsc_for_mac_2021" } } }, { "category": "product_version_range", "name": "vers:unknown/ltsc for mac 2024", "product": { "name": "vers:unknown/ltsc for mac 2024", "product_id": "CSAFPID-1305162", "product_identification_helper": { "cpe": "cpe:/a:microsoft:office:ltsc_for_mac_2024" } } } ], "category": "product_name", "name": "Office" }, { "branches": [ { "category": "product_version_range", "name": "vers:unknown/for mac", "product": { "name": "vers:unknown/for mac", "product_id": "CSAFPID-8263373", "product_identification_helper": { "cpe": "cpe:/a:microsoft:office_365:for_mac" } } } ], "category": "product_name", "name": "Office 365" }, { "branches": [ { "category": "product_version_range", "name": "vers:unknown/2016", "product": { "name": "vers:unknown/2016", "product_id": "CSAFPID-6042664", "product_identification_helper": { "cpe": "cpe:/a:microsoft:powerpoint:2016" } } } ], "category": "product_name", "name": "PowerPoint" }, { "branches": [ { "category": "product_version_range", "name": "vers:unknown/enterprise server 2016", "product": { "name": "vers:unknown/enterprise server 2016", "product_id": "CSAFPID-1189241", "product_identification_helper": { "cpe": "cpe:/a:microsoft:sharepoint:enterprise_server_2016" } } }, { "category": "product_version_range", "name": "vers:unknown/server subscription edition", "product": { "name": "vers:unknown/server subscription edition", "product_id": "CSAFPID-1189242", "product_identification_helper": { "cpe": "cpe:/a:microsoft:sharepoint:server_subscription_edition" } } }, { "category": "product_version_range", "name": "vers:unknown/unknown", "product": { "name": "vers:unknown/unknown", "product_id": "CSAFPID-1332117" } } ], "category": "product_name", "name": "SharePoint" }, { "branches": [ { "category": "product_version_range", "name": "vers:unknown/2016", "product": { "name": "vers:unknown/2016", "product_id": "CSAFPID-62652", "product_identification_helper": { "cpe": "cpe:/a:microsoft:word:2016" } } } ], "category": "product_name", "name": "Word" }, { "branches": [ { "category": "product_version_range", "name": "vers:unknown/2016", "product": { "name": "vers:unknown/2016", "product_id": "CSAFPID-2140507", "product_identification_helper": { "cpe": "cpe:2.3:a:microsoft:sharepoint_server:2016:*:*:*:enterprise:*:*:*" } } }, { "category": "product_version_range", "name": "vers:unknown/2019", "product": { "name": "vers:unknown/2019", "product_id": "CSAFPID-2098929", "product_identification_helper": { "cpe": "cpe:2.3:a:microsoft:sharepoint_server:2019:*:*:*:*:*:*:*" } } }, { "category": "product_version_range", "name": "vers:unknown/<16.0.19725.20434", "product": { "name": "vers:unknown/<16.0.19725.20434", "product_id": "CSAFPID-8811363", "product_identification_helper": { "cpe": "cpe:2.3:a:microsoft:sharepoint_server:*:*:*:*:subscription:*:*:*" } } } ], "category": "product_name", "name": "sharepoint_server" } ], "category": "vendor", "name": "Microsoft" } ] }, "vulnerabilities": [ { "cve": "CVE-2026-55040", "cwe": { "id": "CWE-1390", "name": "Weak Authentication" }, "notes": [ { "category": "description", "text": "

Weak authentication in Microsoft Office SharePoint allows an unauthorized attacker to bypass a security feature over a network.

\n", "title": "microsoft - https://api.msrc.microsoft.com/cvrf/v3.0/cvrf/2026-Jul" }, { "category": "description", "text": "Weak authentication in Microsoft Office SharePoint allows an unauthorized attacker to bypass a security feature over a network.", "title": "nvd - https://services.nvd.nist.gov/rest/json/cves/2.0?cveId=CVE-2026-55040" }, { "category": "description", "text": "Microsoft SharePoint contains a weak authentication vulnerability which allows an unauthorized attacker to bypass a security feature over a network.\nApply mitigations in accordance with vendor instructions, ensuring compliance with CISA’s BOD 26-04 Prioritizing Security Updates Based on Risk (see URL in Notes) guidance and CISA’s “Forensics Triage Requirements” (see URL in Notes). Follow applicable BOD 26-04 guidance for cloud services or discontinue use of the product if mitigations are unavailable. Stakeholders are responsible for evaluating each asset's internet exposure and ensuring adherence to BOD 26-04 patching guidelines.", "title": "cisagov - https://www.cisa.gov/sites/default/files/feeds/known_exploited_vulnerabilities.json" }, { "category": "description", "text": "Weak authentication in Microsoft Office SharePoint allows an unauthorized attacker to bypass a security feature over a network.", "title": "euvdkev - https://euvdservices.enisa.europa.eu/api/search?fromScore=0&toScore=10&fromEpss=0&toEpss=100&exploited=true&page=0&size=50" }, { "category": "description", "text": "Weak authentication in Microsoft Office SharePoint allows an unauthorized attacker to bypass a security feature over a network.", "title": "cveprojectv5 - https://raw.githubusercontent.com/CVEProject/cvelistV5/main/cves/2026/55xxx/CVE-2026-55040.json" }, { "category": "other", "text": "0.39652", "title": "EPSS" }, { "category": "other", "text": "8.4", "title": "NCSC Score" }, { "category": "other", "text": "Is related to (a version of) an uncommon product, There is cvss data available from a private source, There is product data available from a private source, There is product data available from source Certbundde, VENDOR FIX as product remediation category, There is news data available from source Bleepingcomputer", "title": "NCSC Score top increasing factors" }, { "category": "other", "text": "There is exploit data available from source Nvd, There is exploit data available from source Cveprojectv5", "title": "NCSC Score top decreasing factors" } ], "product_status": { "known_affected": [ "CSAFPID-8808587", "CSAFPID-8808588", "CSAFPID-8808589", "CSAFPID-1429583", "CSAFPID-5137201", "CSAFPID-5137202", "CSAFPID-2796", "CSAFPID-62652", "CSAFPID-1189241", "CSAFPID-1189242", "CSAFPID-1189244", "CSAFPID-1305162", "CSAFPID-1305163", "CSAFPID-1305165", "CSAFPID-1430027", "CSAFPID-1430029", "CSAFPID-1776524", "CSAFPID-1776528", "CSAFPID-5467987", "CSAFPID-5467990", "CSAFPID-6042664", "CSAFPID-8263373", "CSAFPID-2098929", "CSAFPID-2140507", "CSAFPID-8811363", "CSAFPID-1332117", "CSAFPID-8023664", "CSAFPID-8023665" ] }, "references": [ { "category": "external", "summary": "Source - bleepingcomputer", "url": "https://www.bleepingcomputer.com/news/security/hackers-target-microsoft-sharepoint-rce-chain-with-poc-exploit/" }, { "category": "external", "summary": "Source - securitynl", "url": "https://www.security.nl/posting/950672/Belangrijk+beveiligingslek+in+Microsoft+SharePoint+misbruikt+bij+aanvallen?channel=rss" }, { "category": "external", "summary": "Source - first", "url": "https://api.first.org/data/v1/epss" }, { "category": "external", "summary": "Source - cveprojectv5", "url": "https://raw.githubusercontent.com/CVEProject/cvelistV5/main/cves/2026/55xxx/CVE-2026-55040.json" }, { "category": "external", "summary": "Source - bleepingcomputer", "url": "https://www.bleepingcomputer.com/news/microsoft/microsoft-july-2026-patch-tuesday-fixes-massive-570-flaws-3-zero-days/" }, { "category": "external", "summary": "Source - microsoft", "url": "https://api.msrc.microsoft.com/cvrf/v3.0/cvrf/2026-Jul" }, { "category": "external", "summary": "Source - nvd", "url": "https://services.nvd.nist.gov/rest/json/cves/2.0?cveId=CVE-2026-55040" }, { "category": "external", "summary": "Source - ncscclear", "url": "https://advisories.ncsc.nl/advisory?id=NCSC-2026-0237" }, { "category": "external", "summary": "Source - certbundde", "url": "https://wid.cert-bund.de/.well-known/csaf/white/2026/wid-sec-w-2026-2317.json" }, { "category": "external", "summary": "Source - securitynl", "url": "https://www.security.nl/posting/945016/Microsoft+SharePoint-servers+aangevallen%2C+VS+roept+op+tot+extra+beveiliging?channel=rss" }, { "category": "external", "summary": "Source - bleepingcomputer", "url": "https://www.bleepingcomputer.com/news/security/cisa-warns-admins-to-patch-actively-exploited-sharepoint-flaws/" }, { "category": "external", "summary": "Source - securityweek", "url": "https://www.securityweek.com/fresh-sharepoint-vulnerability-exploited-soon-after-disclosure/" }, { "category": "external", "summary": "Source - securitynl", "url": "https://www.security.nl/posting/948844/Microsoft+komt+vanavond+met+update+voor+RCE-lek+in+SharePoint?channel=rss" }, { "category": "external", "summary": "Source - bleepingcomputer", "url": "https://www.bleepingcomputer.com/news/microsoft/hackers-leverage-new-microsoft-sharepoint-exploit-in-attacks/" }, { "category": "external", "summary": "Source - securityweek", "url": "https://www.securityweek.com/sharepoint-vulnerability-exploited-shortly-after-poc-release/" }, { "category": "external", "summary": "Source - securitynl", "url": "https://www.security.nl/posting/949072/Microsoft+SharePoint-lek+misbruikt+na+verschijnen+proof-of-concept+exploit?channel=rss" }, { "category": "external", "summary": "Source - euvdkev", "url": "https://euvdservices.enisa.europa.eu/api/search?fromScore=0&toScore=10&fromEpss=0&toEpss=100&exploited=true&page=0&size=50" }, { "category": "external", "summary": "Source - cisagov", "url": "https://www.cisa.gov/sites/default/files/feeds/known_exploited_vulnerabilities.json" }, { "category": "external", "summary": "Source - securityweek", "url": "https://www.securityweek.com/cisa-urges-immediate-patching-of-exploited-microsoft-vmware-apple-vulnerabilities/" }, { "category": "external", "summary": "Source - ncscclear", "url": "https://vulnerabilities.ncsc.nl/manual/CVE-2026-55040" }, { "category": "external", "summary": "News - bleepingcomputer", "url": "https://www.bleepingcomputer.com/news/microsoft/microsoft-july-2026-patch-tuesday-fixes-massive-570-flaws-3-zero-days/" }, { "category": "external", "summary": "News - securitynl", "url": "https://www.security.nl/posting/945016/Microsoft+SharePoint-servers+aangevallen%2C+VS+roept+op+tot+extra+beveiliging?channel=rss" }, { "category": "external", "summary": "News - bleepingcomputer", "url": "https://www.bleepingcomputer.com/news/security/cisa-warns-admins-to-patch-actively-exploited-sharepoint-flaws/" }, { "category": "external", "summary": "News - securityweek", "url": "https://www.securityweek.com/fresh-sharepoint-vulnerability-exploited-soon-after-disclosure/" }, { "category": "external", "summary": "News - securitynl", "url": "https://www.security.nl/posting/948844/Microsoft+komt+vanavond+met+update+voor+RCE-lek+in+SharePoint?channel=rss" }, { "category": "external", "summary": "News - securityweek", "url": "https://www.securityweek.com/sharepoint-vulnerability-exploited-shortly-after-poc-release/" }, { "category": "external", "summary": "News - bleepingcomputer", "url": "https://www.bleepingcomputer.com/news/microsoft/hackers-leverage-new-microsoft-sharepoint-exploit-in-attacks/" }, { "category": "external", "summary": "News - securitynl", "url": "https://www.security.nl/posting/949072/Microsoft+SharePoint-lek+misbruikt+na+verschijnen+proof-of-concept+exploit?channel=rss" }, { "category": "external", "summary": "News - securityweek", "url": "https://www.securityweek.com/cisa-urges-immediate-patching-of-exploited-microsoft-vmware-apple-vulnerabilities/" }, { "category": "external", "summary": "News - bleepingcomputer", "url": "https://www.bleepingcomputer.com/news/security/hackers-target-microsoft-sharepoint-rce-chain-with-poc-exploit/" }, { "category": "external", "summary": "News - securitynl", "url": "https://www.security.nl/posting/950672/Belangrijk+beveiligingslek+in+Microsoft+SharePoint+misbruikt+bij+aanvallen?channel=rss" }, { "category": "external", "summary": "Reference - certbundde; cisagov; cveprojectv5; euvdkev; nvd", "url": "https://msrc.microsoft.com/update-guide/vulnerability/CVE-2026-55040" }, { "category": "external", "summary": "Reference - cisagov", "url": "https://nvd.nist.gov/vuln/detail/CVE-2026-55040" }, { "category": "external", "summary": "Reference - cveprojectv5; nvd", "url": "https://www.cisa.gov/known-exploited-vulnerabilities-catalog?field_cve=CVE-2026-55040" }, { "category": "external", "summary": "Reference - certbundde; cveprojectv5; nvd", "url": "https://www.rapid7.com/blog/post/ra-microsoft-sharepoint-jwt-token-authentication-bypass-cve-2026-55040/" }, { "category": "external", "summary": "Reference - nvd", "url": "https://github.com/sfewer-r7/CVE-2026-55040" }, { "category": "external", "summary": "Reference - certbundde", "url": "https://msrc.microsoft.com/update-guide/" }, { "category": "external", "summary": "Reference - certbundde", "url": "https://msrc.microsoft.com/update-guide/vulnerability/CVE-2026-47290" }, { "category": "external", "summary": "Reference - certbundde", "url": "https://msrc.microsoft.com/update-guide/vulnerability/CVE-2026-47642" }, { "category": "external", "summary": "Reference - certbundde", "url": "https://msrc.microsoft.com/update-guide/vulnerability/CVE-2026-48580" }, { "category": "external", "summary": "Reference - certbundde", "url": "https://msrc.microsoft.com/update-guide/vulnerability/CVE-2026-50301" }, { "category": "external", "summary": "Reference - certbundde", "url": "https://msrc.microsoft.com/update-guide/vulnerability/CVE-2026-50314" }, { "category": "external", "summary": "Reference - certbundde", "url": "https://msrc.microsoft.com/update-guide/vulnerability/CVE-2026-50387" }, { "category": "external", "summary": "Reference - certbundde", "url": "https://msrc.microsoft.com/update-guide/vulnerability/CVE-2026-50408" }, { "category": "external", "summary": "Reference - certbundde", "url": "https://msrc.microsoft.com/update-guide/vulnerability/CVE-2026-50467" }, { "category": "external", "summary": "Reference - certbundde", "url": "https://msrc.microsoft.com/update-guide/vulnerability/CVE-2026-50522" }, { "category": "external", "summary": "Reference - certbundde", "url": "https://msrc.microsoft.com/update-guide/vulnerability/CVE-2026-50665" }, { "category": "external", "summary": "Reference - certbundde", "url": "https://msrc.microsoft.com/update-guide/vulnerability/CVE-2026-50675" }, { "category": "external", "summary": "Reference - certbundde", "url": "https://msrc.microsoft.com/update-guide/vulnerability/CVE-2026-50678" }, { "category": "external", "summary": "Reference - certbundde", "url": "https://msrc.microsoft.com/update-guide/vulnerability/CVE-2026-54108" }, { "category": "external", "summary": "Reference - certbundde", "url": "https://msrc.microsoft.com/update-guide/vulnerability/CVE-2026-54131" }, { "category": "external", "summary": "Reference - certbundde", "url": "https://msrc.microsoft.com/update-guide/vulnerability/CVE-2026-54988" }, { "category": "external", "summary": "Reference - certbundde", "url": "https://msrc.microsoft.com/update-guide/vulnerability/CVE-2026-55016" }, { "category": "external", "summary": "Reference - certbundde", "url": "https://msrc.microsoft.com/update-guide/vulnerability/CVE-2026-55017" }, { "category": "external", "summary": "Reference - certbundde", "url": "https://msrc.microsoft.com/update-guide/vulnerability/CVE-2026-55018" }, { "category": "external", "summary": "Reference - certbundde", "url": "https://msrc.microsoft.com/update-guide/vulnerability/CVE-2026-55019" }, { "category": "external", "summary": "Reference - certbundde", "url": "https://msrc.microsoft.com/update-guide/vulnerability/CVE-2026-55020" }, { "category": "external", "summary": "Reference - certbundde", "url": "https://msrc.microsoft.com/update-guide/vulnerability/CVE-2026-55021" }, { "category": "external", "summary": "Reference - certbundde", "url": "https://msrc.microsoft.com/update-guide/vulnerability/CVE-2026-55022" }, { "category": "external", "summary": "Reference - certbundde", "url": "https://msrc.microsoft.com/update-guide/vulnerability/CVE-2026-55023" }, { "category": "external", "summary": "Reference - certbundde", "url": "https://msrc.microsoft.com/update-guide/vulnerability/CVE-2026-55024" }, { "category": "external", "summary": "Reference - certbundde", "url": "https://msrc.microsoft.com/update-guide/vulnerability/CVE-2026-55025" }, { "category": "external", "summary": "Reference - certbundde", "url": "https://msrc.microsoft.com/update-guide/vulnerability/CVE-2026-55026" }, { "category": "external", "summary": "Reference - certbundde", "url": "https://msrc.microsoft.com/update-guide/vulnerability/CVE-2026-55027" }, { "category": "external", "summary": "Reference - certbundde", "url": "https://msrc.microsoft.com/update-guide/vulnerability/CVE-2026-55028" }, { "category": "external", "summary": "Reference - certbundde", "url": "https://msrc.microsoft.com/update-guide/vulnerability/CVE-2026-55029" }, { "category": "external", "summary": "Reference - certbundde", "url": "https://msrc.microsoft.com/update-guide/vulnerability/CVE-2026-55030" }, { "category": "external", "summary": "Reference - certbundde", "url": "https://msrc.microsoft.com/update-guide/vulnerability/CVE-2026-55031" }, { "category": "external", "summary": "Reference - certbundde", "url": "https://msrc.microsoft.com/update-guide/vulnerability/CVE-2026-55032" }, { "category": "external", "summary": "Reference - certbundde", "url": "https://msrc.microsoft.com/update-guide/vulnerability/CVE-2026-55033" }, { "category": "external", "summary": "Reference - certbundde", "url": "https://msrc.microsoft.com/update-guide/vulnerability/CVE-2026-55034" }, { "category": "external", "summary": "Reference - certbundde", "url": "https://msrc.microsoft.com/update-guide/vulnerability/CVE-2026-55035" }, { "category": "external", "summary": "Reference - certbundde", "url": "https://msrc.microsoft.com/update-guide/vulnerability/CVE-2026-55036" }, { "category": "external", "summary": "Reference - certbundde", "url": "https://msrc.microsoft.com/update-guide/vulnerability/CVE-2026-55037" }, { "category": "external", "summary": "Reference - certbundde", "url": "https://msrc.microsoft.com/update-guide/vulnerability/CVE-2026-55038" }, { "category": "external", "summary": "Reference - certbundde", "url": "https://msrc.microsoft.com/update-guide/vulnerability/CVE-2026-55039" }, { "category": "external", "summary": "Reference - certbundde", "url": "https://msrc.microsoft.com/update-guide/vulnerability/CVE-2026-55041" }, { "category": "external", "summary": "Reference - certbundde", "url": "https://msrc.microsoft.com/update-guide/vulnerability/CVE-2026-55042" }, { "category": "external", "summary": "Reference - certbundde", "url": "https://msrc.microsoft.com/update-guide/vulnerability/CVE-2026-55043" }, { "category": "external", "summary": "Reference - certbundde", "url": "https://msrc.microsoft.com/update-guide/vulnerability/CVE-2026-55044" }, { "category": "external", "summary": "Reference - certbundde", "url": "https://msrc.microsoft.com/update-guide/vulnerability/CVE-2026-55045" }, { "category": "external", "summary": "Reference - certbundde", "url": "https://msrc.microsoft.com/update-guide/vulnerability/CVE-2026-55046" }, { "category": "external", "summary": "Reference - certbundde", "url": "https://msrc.microsoft.com/update-guide/vulnerability/CVE-2026-55047" }, { "category": "external", "summary": "Reference - certbundde", "url": "https://msrc.microsoft.com/update-guide/vulnerability/CVE-2026-55048" }, { "category": "external", "summary": "Reference - certbundde", "url": "https://msrc.microsoft.com/update-guide/vulnerability/CVE-2026-55049" }, { "category": "external", "summary": "Reference - certbundde", "url": "https://msrc.microsoft.com/update-guide/vulnerability/CVE-2026-55050" }, { "category": "external", "summary": "Reference - certbundde", "url": "https://msrc.microsoft.com/update-guide/vulnerability/CVE-2026-55051" }, { "category": "external", "summary": "Reference - certbundde", "url": "https://msrc.microsoft.com/update-guide/vulnerability/CVE-2026-55052" }, { "category": "external", "summary": "Reference - certbundde", "url": "https://msrc.microsoft.com/update-guide/vulnerability/CVE-2026-55053" }, { "category": "external", "summary": "Reference - certbundde", "url": "https://msrc.microsoft.com/update-guide/vulnerability/CVE-2026-55054" }, { "category": "external", "summary": "Reference - certbundde", "url": "https://msrc.microsoft.com/update-guide/vulnerability/CVE-2026-55055" }, { "category": "external", "summary": "Reference - certbundde", "url": "https://msrc.microsoft.com/update-guide/vulnerability/CVE-2026-55056" }, { "category": "external", "summary": "Reference - certbundde", "url": "https://msrc.microsoft.com/update-guide/vulnerability/CVE-2026-55057" }, { "category": "external", "summary": "Reference - certbundde", "url": "https://msrc.microsoft.com/update-guide/vulnerability/CVE-2026-55058" }, { "category": "external", "summary": "Reference - certbundde", "url": "https://msrc.microsoft.com/update-guide/vulnerability/CVE-2026-55120" }, { "category": "external", "summary": "Reference - certbundde", "url": "https://msrc.microsoft.com/update-guide/vulnerability/CVE-2026-55121" }, { "category": "external", "summary": "Reference - certbundde", "url": "https://msrc.microsoft.com/update-guide/vulnerability/CVE-2026-55122" }, { "category": "external", "summary": "Reference - certbundde", "url": "https://msrc.microsoft.com/update-guide/vulnerability/CVE-2026-55123" }, { "category": "external", "summary": "Reference - certbundde", "url": "https://msrc.microsoft.com/update-guide/vulnerability/CVE-2026-55124" }, { "category": "external", "summary": "Reference - certbundde", "url": "https://msrc.microsoft.com/update-guide/vulnerability/CVE-2026-55125" }, { "category": "external", "summary": "Reference - certbundde", "url": "https://msrc.microsoft.com/update-guide/vulnerability/CVE-2026-55126" }, { "category": "external", "summary": "Reference - certbundde", "url": "https://msrc.microsoft.com/update-guide/vulnerability/CVE-2026-55127" }, { "category": "external", "summary": "Reference - certbundde", "url": "https://msrc.microsoft.com/update-guide/vulnerability/CVE-2026-55128" }, { "category": "external", "summary": "Reference - certbundde", "url": "https://msrc.microsoft.com/update-guide/vulnerability/CVE-2026-55129" }, { "category": "external", "summary": "Reference - certbundde", "url": "https://msrc.microsoft.com/update-guide/vulnerability/CVE-2026-55130" }, { "category": "external", "summary": "Reference - certbundde", "url": "https://msrc.microsoft.com/update-guide/vulnerability/CVE-2026-55131" }, { "category": "external", "summary": "Reference - certbundde", "url": "https://msrc.microsoft.com/update-guide/vulnerability/CVE-2026-55132" }, { "category": "external", "summary": "Reference - certbundde", "url": "https://msrc.microsoft.com/update-guide/vulnerability/CVE-2026-55133" }, { "category": "external", "summary": "Reference - certbundde", "url": "https://msrc.microsoft.com/update-guide/vulnerability/CVE-2026-55134" }, { "category": "external", "summary": "Reference - certbundde", "url": "https://msrc.microsoft.com/update-guide/vulnerability/CVE-2026-55135" }, { "category": "external", "summary": "Reference - certbundde", "url": "https://msrc.microsoft.com/update-guide/vulnerability/CVE-2026-55136" }, { "category": "external", "summary": "Reference - certbundde", "url": "https://msrc.microsoft.com/update-guide/vulnerability/CVE-2026-55137" }, { "category": "external", "summary": "Reference - certbundde", "url": "https://msrc.microsoft.com/update-guide/vulnerability/CVE-2026-55138" }, { "category": "external", "summary": "Reference - certbundde", "url": "https://msrc.microsoft.com/update-guide/vulnerability/CVE-2026-55139" }, { "category": "external", "summary": "Reference - certbundde", "url": "https://msrc.microsoft.com/update-guide/vulnerability/CVE-2026-55140" }, { "category": "external", "summary": "Reference - certbundde", "url": "https://msrc.microsoft.com/update-guide/vulnerability/CVE-2026-55141" }, { "category": "external", "summary": "Reference - certbundde", "url": "https://msrc.microsoft.com/update-guide/vulnerability/CVE-2026-55142" }, { "category": "external", "summary": "Reference - certbundde", "url": "https://msrc.microsoft.com/update-guide/vulnerability/CVE-2026-55898" }, { "category": "external", "summary": "Reference - certbundde", "url": "https://msrc.microsoft.com/update-guide/vulnerability/CVE-2026-55899" }, { "category": "external", "summary": "Reference - certbundde", "url": "https://msrc.microsoft.com/update-guide/vulnerability/CVE-2026-55947" }, { "category": "external", "summary": "Reference - certbundde", "url": "https://msrc.microsoft.com/update-guide/vulnerability/CVE-2026-55948" }, { "category": "external", "summary": "Reference - certbundde", "url": "https://msrc.microsoft.com/update-guide/vulnerability/CVE-2026-55949" }, { "category": "external", "summary": "Reference - certbundde", "url": "https://msrc.microsoft.com/update-guide/vulnerability/CVE-2026-56156" }, { "category": "external", "summary": "Reference - certbundde", "url": "https://msrc.microsoft.com/update-guide/vulnerability/CVE-2026-56157" }, { "category": "external", "summary": "Reference - certbundde", "url": "https://msrc.microsoft.com/update-guide/vulnerability/CVE-2026-56164" }, { "category": "external", "summary": "Reference - certbundde", "url": "https://msrc.microsoft.com/update-guide/vulnerability/CVE-2026-56192" }, { "category": "external", "summary": "Reference - certbundde", "url": "https://msrc.microsoft.com/update-guide/vulnerability/CVE-2026-56193" }, { "category": "external", "summary": "Reference - certbundde", "url": "https://msrc.microsoft.com/update-guide/vulnerability/CVE-2026-56195" }, { "category": "external", "summary": "Reference - certbundde", "url": "https://msrc.microsoft.com/update-guide/vulnerability/CVE-2026-58277" }, { "category": "external", "summary": "Reference - certbundde", "url": "https://msrc.microsoft.com/update-guide/vulnerability/CVE-2026-58618" }, { "category": "external", "summary": "Reference - certbundde", "url": "https://msrc.microsoft.com/update-guide/vulnerability/CVE-2026-58644" }, { "category": "external", "summary": "Reference - certbundde", "url": "https://wid.cert-bund.de/.well-known/csaf/white/2026/wid-sec-w-2026-2317.json" }, { "category": "external", "summary": "Reference - certbundde", "url": "https://wid.cert-bund.de/portal/wid/securityadvisory?name=WID-SEC-2026-2317" }, { "category": "external", "summary": "Reference - certbundde", "url": "https://www.cisa.gov/known-exploited-vulnerabilities-catalog" } ], "remediations": [ { "category": "vendor_fix", "details": "5002882", "product_ids": [ "CSAFPID-1429583" ], "url": "https://www.microsoft.com/en-us/download/details.aspx?id=108730" }, { "category": "vendor_fix", "details": "5002891", "product_ids": [ "CSAFPID-5137201" ], "url": "https://www.microsoft.com/en-us/download/details.aspx?id=108723" }, { "category": "vendor_fix", "details": "5002883", "product_ids": [ "CSAFPID-5137202" ], "url": "https://www.microsoft.com/en-us/download/details.aspx?id=108726" } ], "scores": [ { "cvss_v3": { "version": "3.1", "vectorString": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:N/E:U/RL:O/RC:C", "baseScore": 9.1, "baseSeverity": "CRITICAL" }, "products": [ "CSAFPID-1189241", "CSAFPID-1189242", "CSAFPID-1189244", "CSAFPID-1305162", "CSAFPID-1305163", "CSAFPID-1305165", "CSAFPID-1332117", "CSAFPID-1429583", "CSAFPID-1430027", "CSAFPID-1430029", "CSAFPID-1776524", "CSAFPID-1776528", "CSAFPID-2098929", "CSAFPID-2140507", "CSAFPID-2796", "CSAFPID-5137201", "CSAFPID-5137202", "CSAFPID-5467987", "CSAFPID-5467990", "CSAFPID-6042664", "CSAFPID-62652", "CSAFPID-8023664", "CSAFPID-8023665", "CSAFPID-8263373", "CSAFPID-8808587", "CSAFPID-8808588", "CSAFPID-8808589", "CSAFPID-8811363" ] } ], "threats": [ { "category": "exploit_status", "details": "Publicly Disclosed:No;Exploited:No;Latest Software Release:Exploitation More Likely", "product_ids": [ "CSAFPID-1429583", "CSAFPID-5137201", "CSAFPID-5137202" ] }, { "category": "impact", "details": "Security Feature Bypass", "product_ids": [ "CSAFPID-1429583", "CSAFPID-5137201", "CSAFPID-5137202" ] }, { "category": "exploit_status", "details": "exploited" } ], "title": "CVE-2026-55040" } ] }