{ "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-2026-65791", "tracking": { "current_release_date": "2026-08-11T19:55:32.869159Z", "generator": { "date": "2026-02-17T15:00:00Z", "engine": { "name": "V.E.L.M.A", "version": "1.7" } }, "id": "CVE-2026-65791", "initial_release_date": "2026-08-11T06:14:12.444896Z", "revision_history": [ { "date": "2026-08-11T06:14:12.444896Z", "number": "1", "summary": "NCSC Score created." }, { "date": "2026-08-11T17:42:55.606830Z", "number": "2", "summary": "Source created.| CVE status created. (valid)| Description created for source.| CVSS created.| Products connected (13).| References created (1).| CWES updated (1)." }, { "date": "2026-08-11T17:43:09.251728Z", "number": "3", "summary": "NCSC Score updated." }, { "date": "2026-08-11T17:44:11.250682Z", "number": "4", "summary": "Source created.| CVE status created. (valid)| Description created for source.| CVSS created.| References created (1).| CWES updated (1)." }, { "date": "2026-08-11T17:44:17.792066Z", "number": "5", "summary": "NCSC Score updated." }, { "date": "2026-08-11T18:28:23.508215Z", "number": "6", "summary": "Source connected.| CVE status created. (valid)| Description created for source.| CVSS created.| Products connected (16).| Product Threats created (32).| Product Remediations created (20).| CWES updated (1).| Exploitable created." }, { "date": "2026-08-11T18:28:27.290330Z", "number": "7", "summary": "NCSC Score updated." }, { "date": "2026-08-11T18:40:35.446979Z", "number": "8", "summary": "Unknown change." }, { "date": "2026-08-11T19:05:33.780971Z", "number": "9", "summary": "Source connected.| CVE status created. (valid)| News created (1)." }, { "date": "2026-08-11T19:05:35.243663Z", "number": "10", "summary": "NCSC Score updated." }, { "date": "2026-08-11T19:53:15.523520Z", "number": "11", "summary": "Source connected.| CVE status created. (valid)" } ], "status": "interim", "version": "11" } }, "product_tree": { "branches": [ { "branches": [ { "branches": [ { "category": "product_version_range", "name": "vers:unknown/10.0.14393.0|<10.0.14393.9418", "product": { "name": "vers:unknown/10.0.14393.0|<10.0.14393.9418", "product_id": "CSAFPID-8962553" } } ], "category": "product_name", "name": "Windows 10 Version 1607" }, { "branches": [ { "branches": [ { "category": "product_version_range", "name": "vers:microsoft/10.0.14393.9418", "product": { "name": "vers:microsoft/10.0.14393.9418", "product_id": "CSAFPID-8962755", "product_identification_helper": { "cpe": "cpe:2.3:o:microsoft:windows_10_1607:10.0.14393.9418:*:*:*:*:*:x86:*" } } } ], "category": "product_name", "name": "Windows 10 Version 1607 for 32-bit Systems" }, { "branches": [ { "category": "product_version_range", "name": "vers:microsoft/10.0.14393.9418", "product": { "name": "vers:microsoft/10.0.14393.9418", "product_id": "CSAFPID-8962756", "product_identification_helper": { "cpe": "cpe:2.3:o:microsoft:windows_10_1607:10.0.14393.9418:*:*:*:*:*:x64:*" } } } ], "category": "product_name", "name": "Windows 10 Version 1607 for x64-based Systems" }, { "branches": [ { "category": "product_version_range", "name": "vers:microsoft/10.0.17763.9115", "product": { "name": "vers:microsoft/10.0.17763.9115", "product_id": "CSAFPID-8959031", "product_identification_helper": { "cpe": "cpe:2.3:o:microsoft:windows_10_1809:10.0.17763.9115:*:*:*:*:*:x86:*" } } } ], "category": "product_name", "name": "Windows 10 Version 1809 for 32-bit Systems" }, { "branches": [ { "category": "product_version_range", "name": "vers:microsoft/10.0.17763.9115", "product": { "name": "vers:microsoft/10.0.17763.9115", "product_id": "CSAFPID-8959032", "product_identification_helper": { "cpe": "cpe:2.3:o:microsoft:windows_10_1809:10.0.17763.9115:*:*:*:*:*:x64:*" } } } ], "category": "product_name", "name": "Windows 10 Version 1809 for x64-based Systems" }, { "branches": [ { "category": "product_version_range", "name": "vers:microsoft/10.0.14393.9418", "product": { "name": "vers:microsoft/10.0.14393.9418", "product_id": "CSAFPID-8962757", "product_identification_helper": { "cpe": "cpe:2.3:o:microsoft:windows_server_2016:10.0.14393.9418:*:*:*:*:*:*:*" } } } ], "category": "product_name", "name": "Windows Server 2016" }, { "branches": [ { "category": "product_version_range", "name": "vers:microsoft/10.0.14393.9418", "product": { "name": "vers:microsoft/10.0.14393.9418", "product_id": "CSAFPID-8962758", "product_identification_helper": { "cpe": "cpe:2.3:o:microsoft:windows_server_2016:10.0.14393.9418:*:*:*:*:*:*:*" } } } ], "category": "product_name", "name": "Windows Server 2016 (Server Core installation)" }, { "branches": [ { "category": "product_version_range", "name": "vers:microsoft/10.0.17763.9115", "product": { "name": "vers:microsoft/10.0.17763.9115", "product_id": "CSAFPID-8959033", "product_identification_helper": { "cpe": "cpe:2.3:o:microsoft:windows_server_2019:10.0.17763.9115:*:*:*:*:*:*:*" } } } ], "category": "product_name", "name": "Windows Server 2019" }, { "branches": [ { "category": "product_version_range", "name": "vers:microsoft/10.0.17763.9115", "product": { "name": "vers:microsoft/10.0.17763.9115", "product_id": "CSAFPID-8959034", "product_identification_helper": { "cpe": "cpe:2.3:o:microsoft:windows_server_2019:10.0.17763.9115:*:*:*:*:*:*:*" } } } ], "category": "product_name", "name": "Windows Server 2019 (Server Core installation)" }, { "branches": [ { "category": "product_version_range", "name": "vers:microsoft/10.0.20348.5499", "product": { "name": "vers:microsoft/10.0.20348.5499", "product_id": "CSAFPID-8962743", "product_identification_helper": { "cpe": "cpe:2.3:o:microsoft:windows_server_2022:10.0.20348.5499:*:*:*:*:*:*:*" } } } ], "category": "product_name", "name": "Windows Server 2022" }, { "branches": [ { "category": "product_version_range", "name": "vers:microsoft/10.0.20348.5499", "product": { "name": "vers:microsoft/10.0.20348.5499", "product_id": "CSAFPID-8962744", "product_identification_helper": { "cpe": "cpe:2.3:o:microsoft:windows_server_2022:10.0.20348.5499:*:*:*:*:*:*:*" } } } ], "category": "product_name", "name": "Windows Server 2022 (Server Core installation)" }, { "branches": [ { "category": "product_version_range", "name": "vers:microsoft/10.0.26100.33296", "product": { "name": "vers:microsoft/10.0.26100.33296", "product_id": "CSAFPID-8959048", "product_identification_helper": { "cpe": "cpe:2.3:o:microsoft:windows_server_2025:10.0.26100.33296:*:*:*:*:*:*:*" } } } ], "category": "product_name", "name": "Windows Server 2025" }, { "branches": [ { "category": "product_version_range", "name": "vers:microsoft/10.0.26100.33296", "product": { "name": "vers:microsoft/10.0.26100.33296", "product_id": "CSAFPID-8959043", "product_identification_helper": { "cpe": 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"name": "vers:microsoft/6.2.9200.26279", "product_id": "CSAFPID-8959056", "product_identification_helper": { "cpe": "cpe:2.3:o:microsoft:windows_server_2012:6.2.9200.26279:*:*:*:*:*:x64:*" } } } ], "category": "product_name", "name": "Windows Server 2012 (Server Core installation)" }, { "branches": [ { "category": "product_version_range", "name": "vers:microsoft/6.3.9600.23337", "product": { "name": "vers:microsoft/6.3.9600.23337", "product_id": "CSAFPID-8959057", "product_identification_helper": { "cpe": "cpe:2.3:o:microsoft:windows_server_2012_R2:6.3.9600.23337:*:*:*:*:*:x64:*" } } } ], "category": "product_name", "name": "Windows Server 2012 R2" }, { "branches": [ { "category": "product_version_range", "name": "vers:microsoft/6.3.9600.23337", "product": { "name": "vers:microsoft/6.3.9600.23337", "product_id": "CSAFPID-8959058", "product_identification_helper": { "cpe": "cpe:2.3:o:microsoft:windows_server_2012_R2:6.3.9600.23337:*:*:*:*:*:x64:*" } } } ], "category": "product_name", "name": "Windows Server 2012 R2 (Server Core installation)" } ], "category": "product_family", "name": "ESU" }, { "branches": [ { "category": "product_version_range", "name": "vers:unknown/6.2.9200.0|<6.2.9200.26279", "product": { "name": "vers:unknown/6.2.9200.0|<6.2.9200.26279", "product_id": "CSAFPID-8962562" } } ], "category": "product_name", "name": "Windows Server 2012" }, { "branches": [ { "category": "product_version_range", "name": "vers:unknown/6.2.9200.0|<6.2.9200.26279", "product": { "name": "vers:unknown/6.2.9200.0|<6.2.9200.26279", "product_id": "CSAFPID-8962563" } } ], "category": "product_name", "name": "Windows Server 2012 (Server Core installation)" }, { "branches": [ { "category": "product_version_range", "name": "vers:unknown/6.3.9600.0|<6.3.9600.23337", "product": { "name": "vers:unknown/6.3.9600.0|<6.3.9600.23337", "product_id": "CSAFPID-8962564" } } ], "category": "product_name", "name": "Windows Server 2012 R2" }, { "branches": [ { "category": "product_version_range", "name": "vers:unknown/6.3.9600.0|<6.3.9600.23337", "product": { "name": "vers:unknown/6.3.9600.0|<6.3.9600.23337", "product_id": "CSAFPID-8962565" } } ], "category": "product_name", "name": "Windows Server 2012 R2 (Server Core installation)" }, { "branches": [ { "category": "product_version_range", "name": "vers:unknown/10.0.14393.0|<10.0.14393.9418", "product": { "name": "vers:unknown/10.0.14393.0|<10.0.14393.9418", "product_id": "CSAFPID-8962566" } } ], "category": "product_name", "name": "Windows Server 2016" }, { "branches": [ { "category": "product_version_range", "name": "vers:unknown/10.0.14393.0|<10.0.14393.9418", "product": { "name": "vers:unknown/10.0.14393.0|<10.0.14393.9418", "product_id": "CSAFPID-8962567" } } ], "category": "product_name", "name": "Windows Server 2016 (Server Core installation)" }, { "branches": [ { "category": "product_version_range", "name": "vers:unknown/10.0.17763.0|<10.0.17763.9115", "product": { "name": "vers:unknown/10.0.17763.0|<10.0.17763.9115", "product_id": "CSAFPID-8962568" } } ], "category": "product_name", "name": "Windows Server 2019" }, { "branches": [ { "category": "product_version_range", "name": "vers:unknown/10.0.17763.0|<10.0.17763.9115", "product": { "name": "vers:unknown/10.0.17763.0|<10.0.17763.9115", "product_id": "CSAFPID-8962569" } } ], "category": "product_name", "name": "Windows Server 2019 (Server Core installation)" }, { "branches": [ { "category": "product_version_range", "name": "vers:unknown/10.0.20348.0|<10.0.20348.5499", "product": { "name": "vers:unknown/10.0.20348.0|<10.0.20348.5499", "product_id": "CSAFPID-8962570" } } ], "category": "product_name", "name": "Windows Server 2022" }, { "branches": [ { "category": "product_version_range", "name": "vers:unknown/10.0.26100.0|<10.0.26100.33296", "product": { "name": "vers:unknown/10.0.26100.0|<10.0.26100.33296", "product_id": "CSAFPID-8962571" } } ], "category": "product_name", "name": "Windows Server 2025" }, { "branches": [ { "category": "product_version_range", "name": "vers:unknown/10.0.26100.0|<10.0.26100.33296", "product": { "name": "vers:unknown/10.0.26100.0|<10.0.26100.33296", "product_id": "CSAFPID-8962572" } } ], "category": "product_name", "name": "Windows Server 2025 (Server Core installation)" } ], "category": "vendor", "name": "Microsoft" } ] }, "vulnerabilities": [ { "cve": "CVE-2026-65791", "cwe": { "id": "CWE-122", "name": "Heap-based Buffer Overflow" }, "notes": [ { "category": "description", "text": "Heap-based buffer overflow in Windows iSCSI Target Service allows an unauthorized attacker to execute code over a network.", "title": "cveprojectv5 - https://raw.githubusercontent.com/CVEProject/cvelistV5/main/cves/2026/65xxx/CVE-2026-65791.json" }, { "category": "description", "text": "Heap-based buffer overflow in Windows iSCSI Target Service allows an unauthorized attacker to execute code over a network.", "title": "nvd - https://services.nvd.nist.gov/rest/json/cves/2.0?cveId=CVE-2026-65791" }, { "category": "description", "text": "

Heap-based buffer overflow in Windows iSCSI Target Service allows an unauthorized attacker to execute code over a network.

\n", "title": "microsoft - https://api.msrc.microsoft.com/cvrf/v3.0/cvrf/2026-Aug" }, { "category": "other", "text": "7.1", "title": "NCSC Score" }, { "category": "other", "text": "Is related to (a version of) product Windows Version, There is news data available from source Bleepingcomputer, VENDOR FIX as product remediation category, IMPACT as product threat category", "title": "NCSC Score top increasing factors" }, { "category": "other", "text": "There is cwe data available from source Nvd", "title": "NCSC Score top decreasing factors" } ], "product_status": { "known_affected": [ "CSAFPID-8962553", "CSAFPID-8962554", "CSAFPID-8962562", "CSAFPID-8962563", "CSAFPID-8962564", "CSAFPID-8962565", "CSAFPID-8962566", "CSAFPID-8962567", "CSAFPID-8962568", "CSAFPID-8962569", "CSAFPID-8962570", "CSAFPID-8962571", "CSAFPID-8962572", "CSAFPID-8959031", "CSAFPID-8959032", "CSAFPID-8959033", "CSAFPID-8959034", "CSAFPID-8959043", "CSAFPID-8959048", "CSAFPID-8959055", "CSAFPID-8959056", "CSAFPID-8959057", "CSAFPID-8959058", "CSAFPID-8962743", "CSAFPID-8962744", "CSAFPID-8962755", "CSAFPID-8962756", "CSAFPID-8962757", "CSAFPID-8962758" ] }, "references": [ { "category": "external", "summary": "Source - nvd", "url": "https://services.nvd.nist.gov/rest/json/cves/2.0?cveId=CVE-2026-65791" }, { "category": "external", "summary": "Source - cveprojectv5", "url": "https://raw.githubusercontent.com/CVEProject/cvelistV5/main/cves/2026/65xxx/CVE-2026-65791.json" }, { "category": "external", "summary": "Source - microsoft", "url": "https://api.msrc.microsoft.com/cvrf/v3.0/cvrf/2026-Aug" }, { "category": "external", "summary": "Source - bleepingcomputer", "url": "https://www.bleepingcomputer.com/news/microsoft/microsoft-august-2026-patch-tuesday-fixes-400-flaws-3-zero-days/" }, { "category": "external", "summary": "Source - ncscclear", "url": "https://advisories.ncsc.nl/advisory?id=NCSC-2026-0284" }, { "category": "external", "summary": "News - bleepingcomputer", "url": "https://www.bleepingcomputer.com/news/microsoft/microsoft-august-2026-patch-tuesday-fixes-400-flaws-3-zero-days/" }, { "category": "external", "summary": "Reference - cveprojectv5; nvd", "url": "https://msrc.microsoft.com/update-guide/vulnerability/CVE-2026-65791" } ], "remediations": [ { "category": "vendor_fix", "details": "5120238", "product_ids": [ "CSAFPID-8959031", "CSAFPID-8959032", "CSAFPID-8959033", "CSAFPID-8959034" ], "url": "https://catalog.update.microsoft.com/v7/site/Search.aspx?q=KB5120238" }, { "category": "vendor_fix", "details": "5120228", "product_ids": [ "CSAFPID-8959043", "CSAFPID-8959048" ], "url": "https://catalog.update.microsoft.com/v7/site/Search.aspx?q=KB5120228" }, { "category": "vendor_fix", "details": "5120233", "product_ids": [ "CSAFPID-8959043", "CSAFPID-8959048" ], "url": "https://catalog.update.microsoft.com/v7/site/Search.aspx?q=KB5120233" }, { "category": "vendor_fix", "details": "5120385", "product_ids": [ "CSAFPID-8959055", "CSAFPID-8959056" ], "url": "https://catalog.update.microsoft.com/v7/site/Search.aspx?q=KB5120385" }, { "category": "vendor_fix", "details": "5120386", "product_ids": [ "CSAFPID-8959057", "CSAFPID-8959058" ], "url": "https://catalog.update.microsoft.com/v7/site/Search.aspx?q=KB5120386" }, { "category": "vendor_fix", "details": "5120229", "product_ids": [ "CSAFPID-8962743", "CSAFPID-8962744" ], "url": "https://catalog.update.microsoft.com/v7/site/Search.aspx?q=KB5120229" }, { "category": "vendor_fix", "details": "5120242", "product_ids": [ "CSAFPID-8962743", "CSAFPID-8962744" ], "url": "https://catalog.update.microsoft.com/v7/site/Search.aspx?q=KB5120242" }, { "category": "vendor_fix", "details": "5120418", "product_ids": [ "CSAFPID-8962755", "CSAFPID-8962756", "CSAFPID-8962757", "CSAFPID-8962758" ], "url": "https://catalog.update.microsoft.com/v7/site/Search.aspx?q=KB5120418" } ], "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:H/E:U/RL:O/RC:C", "baseScore": 9.8, "baseSeverity": "CRITICAL" }, "products": [ "CSAFPID-8959031", "CSAFPID-8959032", "CSAFPID-8959033", "CSAFPID-8959034", "CSAFPID-8959043", "CSAFPID-8959048", "CSAFPID-8959055", "CSAFPID-8959056", "CSAFPID-8959057", "CSAFPID-8959058", "CSAFPID-8962553", "CSAFPID-8962554", "CSAFPID-8962562", "CSAFPID-8962563", "CSAFPID-8962564", "CSAFPID-8962565", "CSAFPID-8962566", "CSAFPID-8962567", "CSAFPID-8962568", "CSAFPID-8962569", "CSAFPID-8962570", "CSAFPID-8962571", "CSAFPID-8962572", "CSAFPID-8962743", "CSAFPID-8962744", "CSAFPID-8962755", "CSAFPID-8962756", "CSAFPID-8962757", "CSAFPID-8962758" ] } ], "threats": [ { "category": "exploit_status", "details": "Publicly Disclosed:No;Exploited:No;Latest Software Release:Exploitation Unlikely", "product_ids": [ "CSAFPID-8959031", "CSAFPID-8959032", "CSAFPID-8959033", "CSAFPID-8959034", "CSAFPID-8959043", "CSAFPID-8959048", "CSAFPID-8959055", "CSAFPID-8959056", "CSAFPID-8959057", "CSAFPID-8959058", "CSAFPID-8962743", "CSAFPID-8962744", "CSAFPID-8962755", "CSAFPID-8962756", "CSAFPID-8962757", "CSAFPID-8962758" ] }, { "category": "impact", "details": "Remote Code Execution", "product_ids": [ "CSAFPID-8959031", "CSAFPID-8959032", "CSAFPID-8959033", "CSAFPID-8959034", "CSAFPID-8959043", "CSAFPID-8959048", "CSAFPID-8959055", "CSAFPID-8959056", "CSAFPID-8959057", "CSAFPID-8959058", "CSAFPID-8962743", "CSAFPID-8962744", "CSAFPID-8962755", "CSAFPID-8962756", "CSAFPID-8962757", "CSAFPID-8962758" ] }, { "category": "exploit_status", "details": "exploited" } ], "title": "CVE-2026-65791" } ] }