{ "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-2026-57027", "tracking": { "current_release_date": "2026-07-13T05:27:33.500255Z", "generator": { "date": "2026-02-17T15:00:00Z", "engine": { "name": "V.E.L.M.A", "version": "1.7" } }, "id": "CVE-2026-57027", "initial_release_date": "2026-07-08T18:40:05.603684Z", "revision_history": [ { "date": "2026-07-08T18:40:05.603684Z", "number": "1", "summary": "CVE created.| Source created.| CVE status created. (valid)| Description created for source.| CVSS created.| Products created (1).| Product Remediations created (1).| Products connected (5).| Vendor_assessment created." }, { "date": "2026-07-08T18:40:14.103239Z", "number": "2", "summary": "NCSC Score created." }, { "date": "2026-07-09T03:41:55.180454Z", "number": "3", "summary": "Source connected.| CVE status created. (valid)" }, { "date": "2026-07-09T11:09:28.821925Z", "number": "4", "summary": "Source connected.| CVE status created. (valid)| Products connected (6).| References created (26)." }, { "date": "2026-07-09T11:09:31.131630Z", "number": "5", "summary": "NCSC Score updated." }, { "date": "2026-07-09T22:26:47.044208Z", "number": "6", "summary": "Source created.| CVE status created. (valid)| Description created for source.| CVSS created.| References created (1).| CWES updated (1)." }, { "date": "2026-07-09T22:26:50.590368Z", "number": "7", "summary": "NCSC Score updated." }, { "date": "2026-07-09T23:16:45.665348Z", "number": "8", "summary": "Source created.| CVE status created. (valid)| Description created for source.| CVSS created.| Products connected (3).| Products created (1).| References created (1).| CWES updated (1)." }, { "date": "2026-07-09T23:16:51.096156Z", "number": "9", "summary": "NCSC Score updated." }, { "date": "2026-07-10T15:39:59.470464Z", "number": "10", "summary": "Unknown change." }, { "date": "2026-07-10T16:40:43.693813Z", "number": "11", "summary": "Source connected.| CVE status created. (valid)| EPSS created." }, { "date": "2026-07-10T16:40:46.458712Z", "number": "12", "summary": "NCSC Score updated." }, { "date": "2026-07-13T05:27:22.300123Z", "number": "13", "summary": "Source connected.| CVE status created. (valid)" }, { "date": "2026-07-13T05:27:26.907087Z", "number": "14", "summary": "NCSC Score updated." } ], "status": "interim", "version": "14" } }, "product_tree": { "branches": [ { "branches": [ { "branches": [ { "category": "product_version_range", "name": "vers:unknown/evolved", "product": { "name": "vers:unknown/evolved", "product_id": "CSAFPID-1253029", "product_identification_helper": { "cpe": "cpe:/o:juniper:junos:evolved" } } } ], "category": "product_name", "name": "JUNOS" }, { "branches": [ { "category": "product_version_range", "name": "vers:unknown/unknown", "product": { "name": "vers:unknown/unknown", "product_id": "CSAFPID-2669434", "product_identification_helper": { "cpe": "cpe:/h:juniper:ex:-" } } } ], "category": "product_name", "name": "Juniper EX Series" }, { "branches": [ { "category": "product_version_range", "name": "vers:unknown/unknown", "product": { "name": "vers:unknown/unknown", "product_id": "CSAFPID-1341541", "product_identification_helper": { "cpe": "cpe:/o:juniper:junos:-" } } } ], "category": "product_name", "name": "Juniper JUNOS" }, { "branches": [ { "category": "product_version_range", "name": "vers:unknown/unknown", "product": { "name": "vers:unknown/unknown", "product_id": "CSAFPID-2669431", "product_identification_helper": { "cpe": "cpe:/h:juniper:mx:-" } } } ], "category": "product_name", "name": "Juniper MX Series" }, { "branches": [ { "category": "product_version_range", "name": "vers:unknown/unknown", "product": { "name": "vers:unknown/unknown", "product_id": "CSAFPID-6016081", "product_identification_helper": { "cpe": "cpe:/h:juniper:qfx:-" } } } ], "category": "product_name", "name": "Juniper QFX Series" }, { "branches": [ { "category": "product_version_range", "name": "vers:unknown/unknown", "product": { "name": "vers:unknown/unknown", "product_id": "CSAFPID-2162264", "product_identification_helper": { "cpe": "cpe:/h:juniper:srx_service_gateways:-" } } } ], "category": "product_name", "name": "Juniper SRX Series" } ], "category": "vendor", "name": "Juniper" }, { "branches": [ { "branches": [ { "category": "product_version_range", "name": "vers:unknown/23.2r2-s7", "product": { "name": "vers:unknown/23.2r2-s7", "product_id": "CSAFPID-6012899" } }, { "category": "product_version_range", "name": "vers:unknown/23.4r2-s7", "product": { "name": "vers:unknown/23.4r2-s7", "product_id": "CSAFPID-6012732" } }, { "category": "product_version_range", "name": "vers:unknown/23.4|<23.4r2-s7", "product": { "name": "vers:unknown/23.4|<23.4r2-s7", "product_id": "CSAFPID-8596812" } }, { "category": "product_version_range", "name": "vers:unknown/24.2r2-s4", "product": { "name": "vers:unknown/24.2r2-s4", "product_id": "CSAFPID-6012781" } }, { "category": "product_version_range", "name": "vers:unknown/24.2|<24.2r2-s4", "product": { "name": "vers:unknown/24.2|<24.2r2-s4", "product_id": "CSAFPID-8596764" } }, { "category": "product_version_range", "name": "vers:unknown/24.4r2", "product": { "name": "vers:unknown/24.4r2", "product_id": "CSAFPID-2967611" } }, { "category": "product_version_range", "name": "vers:unknown/24.4|<24.4r2", "product": { "name": "vers:unknown/24.4|<24.4r2", "product_id": "CSAFPID-8596803" } }, { "category": "product_version_range", "name": "vers:unknown/25.2r1", "product": { "name": "vers:unknown/25.2r1", "product_id": "CSAFPID-2967612" } }, { "category": "product_version_range", "name": "vers:unknown/<23.2r2-s7", "product": { "name": "vers:unknown/<23.2r2-s7", "product_id": "CSAFPID-8596762" } }, { "category": "product_version_range", "name": "vers:unknown/<23.2r2-s7|<23.4r2-s7|<24.2r2-s4|<24.4r2", "product": { "name": "vers:unknown/<23.2r2-s7|<23.4r2-s7|<24.2r2-s4|<24.4r2", "product_id": "CSAFPID-8576187" } } ], "category": "product_name", "name": "Junos OS" } ], "category": "vendor", "name": "Juniper Networks" } ] }, "vulnerabilities": [ { "cve": "CVE-2026-57027", "cwe": { "id": "CWE-401", "name": "Missing Release of Memory after Effective Lifetime" }, "notes": [ { "category": "description", "text": "A Missing Release of Memory after Effective Lifetime vulnerability in the packet forwarding engine (pfe) of Juniper Networks Junos OS on specific EX Series devices allows an unauthenticated adjacent attacker to cause a Denial-of-Service (DoS). When sFlow is configured in a Virtual Chassis (VC) scenario with EX4100 Series or EX4400 Series devices, multicast traffic which is received on one VC member and sent out on another member leads to a memory leak and ultimately an FPC crash and restart. The leak can be monitored by watching the continuous increase of the buffer values in the output of: `user@host> show chassis fpc`. A system is only affected if sFlow for multicast is explicitly enabled with: `[forwarding-options sflow egress-multicast enable]`. Juniper SIRT is not aware of any malicious exploitation of this vulnerability. This issue was seen during production usage.", "title": "juniper - https://supportportal.juniper.net/s/article/2026-07-Security-Bulletin-Junos-OS-EX4100-Series-EX4400-With-sFlow-configured-in-a-VC-scenario-multicast-traffic-leads-to-an-FPC-crash-CVE-2026-57027" }, { "category": "description", "text": "A Missing Release of Memory after Effective Lifetime vulnerability in the packet forwarding engine (pfe) of Juniper Networks Junos OS on specific EX Series devices allows an unauthenticated adjacent attacker to cause a Denial-of-Service (DoS).When sFlow is configured in a Virtual Chassis (VC) scenario with EX4100 Series or EX4400 Series devices, multicast traffic which is received on one VC member and sent out on another member leads to a memory leak and ultimately an FPC crash and restart.\n\nThe leak can be monitored by watching the continuous increase of the buffer values in the output of:\n\nuser@host> show chassis fpc \nThis issue affects Junos OS on EX4100 Series and EX4400:\n\n\n * all versions before 23.2R2-S7,\n * 23.4 versions before 23.4R2-S7,\n * 24.2 versions before 24.2R2-S4,\n * 24.4 versions before 24.4R2.", "title": "nvd - https://services.nvd.nist.gov/rest/json/cves/2.0?cveId=CVE-2026-57027" }, { "category": "description", "text": "A Missing Release of Memory after Effective Lifetime vulnerability in the packet forwarding engine (pfe) of Juniper Networks Junos OS on specific EX Series devices allows an unauthenticated adjacent attacker to cause a Denial-of-Service (DoS).When sFlow is configured in a Virtual Chassis (VC) scenario with EX4100 Series or EX4400 Series devices, multicast traffic which is received on one VC member and sent out on another member leads to a memory leak and ultimately an FPC crash and restart.\n\nThe leak can be monitored by watching the continuous increase of the buffer values in the output of:\n\nuser@host> show chassis fpc \nThis issue affects Junos OS on EX4100 Series and EX4400:\n\n\n * all versions before 23.2R2-S7,\n * 23.4 versions before 23.4R2-S7,\n * 24.2 versions before 24.2R2-S4,\n * 24.4 versions before 24.4R2.", "title": "cveprojectv5 - https://raw.githubusercontent.com/CVEProject/cvelistV5/main/cves/2026/57xxx/CVE-2026-57027.json" }, { "category": "other", "text": "0.00269", "title": "EPSS" }, { "category": "other", "text": "CVSS:4.0/AV:A/AC:L/AT:N/PR:N/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:L/AU:Y/R:A/RE:M", "title": "CVSSV4" }, { "category": "other", "text": "7.1", "title": "CVSSV4 base score" }, { "category": "other", "text": "5.7", "title": "NCSC Score" }, { "category": "other", "text": "Is related to a product by vendor Juniper, There is product data available from source Certbundde, Is related to (a version of) an uncommon product, Is related to an uncommon product source", "title": "NCSC Score top increasing factors" }, { "category": "other", "text": "The CVSS vector string contains AV:N (Attack Vector: Network), There is cwe data available from source Nvd", "title": "NCSC Score top decreasing factors" }, { "category": "details", "text": "Severity: 2\n", "title": "Vendor assessment" } ], "product_status": { "fixed": [ "CSAFPID-2967611", "CSAFPID-2967612", "CSAFPID-6012732", "CSAFPID-6012781", "CSAFPID-6012899" ], "known_affected": [ "CSAFPID-8576187", "CSAFPID-1253029", "CSAFPID-1341541", "CSAFPID-2162264", "CSAFPID-2669431", "CSAFPID-2669434", "CSAFPID-6016081", "CSAFPID-8596762", "CSAFPID-8596764", "CSAFPID-8596803", "CSAFPID-8596812" ] }, "references": [ { "category": "external", "summary": "Source - juniper", "url": "https://supportportal.juniper.net/s/article/2026-07-Security-Bulletin-Junos-OS-EX4100-Series-EX4400-With-sFlow-configured-in-a-VC-scenario-multicast-traffic-leads-to-an-FPC-crash-CVE-2026-57027" }, { "category": "external", "summary": "Source - hkcert", "url": "https://www.hkcert.org/security-bulletin/juniper-junos-os-multiple-vulnerabilities_20260709" }, { "category": "external", "summary": "Source - certbundde", "url": "https://wid.cert-bund.de/.well-known/csaf/white/2026/wid-sec-w-2026-2257.json" }, { "category": "external", "summary": "Source - nvd", "url": "https://services.nvd.nist.gov/rest/json/cves/2.0?cveId=CVE-2026-57027" }, { "category": "external", "summary": "Source - cveprojectv5", "url": "https://raw.githubusercontent.com/CVEProject/cvelistV5/main/cves/2026/57xxx/CVE-2026-57027.json" }, { "category": "external", "summary": "Source - first", "url": "https://api.first.org/data/v1/epss?limit=10000&offset=0" }, { "category": "external", "summary": "Source - ncscclear", "url": "https://advisories.ncsc.nl/advisory?id=NCSC-2026-0224" }, { "category": "external", "summary": "Reference - certbundde", "url": "https://supportportal.juniper.net/s/article/2026-07-Security-Bulletin-Junos-OS-MX-Series-Specific-traffic-causes-an-FPC-to-reset-CVE-2026-57019" }, { "category": "external", "summary": "Reference - certbundde", "url": "https://wid.cert-bund.de/.well-known/csaf/white/2026/wid-sec-w-2026-2257.json" }, { "category": "external", "summary": "Reference - certbundde", "url": "https://wid.cert-bund.de/portal/wid/securityadvisory?name=WID-SEC-2026-2257" }, { "category": "external", "summary": "Reference - certbundde", "url": "https://supportportal.juniper.net/s/global-search/%40uri#q=Junos%20OS&sortCriteria=date%20descending&f-sf_articletype=Security%20Advisories&numberOfResults=50" }, { "category": "external", "summary": "Reference - certbundde", "url": "https://supportportal.juniper.net/s/article/2026-07-Security-Bulletin-Junos-OS-and-Junos-OS-Evolved-Configuration-of-a-specific-SSH-option-results-in-mgd-crash-CVE-2026-21901" }, { "category": "external", "summary": "Reference - certbundde", "url": "https://supportportal.juniper.net/s/article/2026-07-Security-Bulletin-Junos-OS-and-Junos-OS-Evolved-EX-Series-QFX-Series-MX-Series-A-specific-show-l2-learning-command-causes-l2ald-crash-CVE-2026-57025" }, { "category": "external", "summary": "Reference - certbundde", "url": "https://supportportal.juniper.net/s/article/2026-07-Security-Bulletin-Junos-OS-and-Junos-OS-Evolved-Receipt-of-a-specific-SNMPv3-request-results-in-memory-leak-and-eventual-snmpd-crash-CVE-2026-33799" }, { "category": "external", "summary": "Reference - certbundde", "url": "https://supportportal.juniper.net/s/article/2026-07-Security-Bulletin-Junos-OS-and-Junos-OS-Evolved-When-a-specifically-malformed-BGP-route-update-is-received-RPD-crashes-CVE-2026-33801" }, { "category": "external", "summary": "Reference - certbundde", "url": "https://supportportal.juniper.net/s/article/2026-07-Security-Bulletin-Junos-OS-Evolved-A-port-which-has-been-inadvertently-exposed-can-be-reached-by-an-attacker-CVE-2026-33803" }, { "category": "external", "summary": "Reference - certbundde", "url": "https://supportportal.juniper.net/s/article/2026-07-Security-Bulletin-Junos-OS-Evolved-A-port-which-has-been-inadvertently-exposed-can-be-reached-by-an-attacker-CVE-2026-57028" }, { "category": "external", "summary": "Reference - certbundde", "url": "https://supportportal.juniper.net/s/article/2026-07-Security-Bulletin-Junos-OS-Evolved-PTX-Series-Receipt-of-repeated-ECMP-routing-updates-results-in-PFE-crash-CVE-2026-33794" }, { "category": "external", "summary": "Reference - certbundde", "url": "https://supportportal.juniper.net/s/article/2026-07-Security-Bulletin-Junos-OS-Evolved-QFX-Series-When-sFlow-collector-reachability-changes-evo-pfemand-process-can-crash-CVE-2026-57029" }, { "category": "external", "summary": "Reference - certbundde", "url": "https://supportportal.juniper.net/s/article/2026-07-Security-Bulletin-Junos-OS-Evolved-URL-handling-vulnerability-in-libfetch-results-in-heap-buffer-overflow-CVE-2020-7450" }, { "category": "external", "summary": "Reference - certbundde", "url": "https://supportportal.juniper.net/s/article/2026-07-Security-Bulletin-Junos-OS-EX4100-Series-EX4400-With-sFlow-configured-in-a-VC-scenario-multicast-traffic-leads-to-an-FPC-crash-CVE-2026-57027" }, { "category": "external", "summary": "Reference - certbundde", "url": "https://supportportal.juniper.net/s/article/2026-07-Security-Bulletin-Junos-OS-EX-Series-Subscribing-to-an-unsupported-telemetry-sensor-path-causes-fxpc-process-crash-CVE-2026-57032" }, { "category": "external", "summary": "Reference - certbundde", "url": "https://supportportal.juniper.net/s/article/2026-07-Security-Bulletin-Junos-OS-EX-Series-Unauthorized-users-can-execute-service-impacting-CLI-command-CVE-2026-33802" }, { "category": "external", "summary": "Reference - certbundde", "url": "https://supportportal.juniper.net/s/article/2026-07-Security-Bulletin-Junos-OS-MX-Series-For-subscribers-configured-on-static-interfaces-input-filters-are-not-in-effect-CVE-2026-57031" }, { "category": "external", "summary": "Reference - certbundde", "url": "https://supportportal.juniper.net/s/article/2026-07-Security-Bulletin-Junos-OS-MX-Series-In-a-VC-scenario-a-high-rate-of-micro-BFD-session-flaps-will-cause-an-FPC-crash-CVE-2026-33800" }, { "category": "external", "summary": "Reference - certbundde", "url": "https://supportportal.juniper.net/s/article/2026-07-Security-Bulletin-Junos-OS-MX-Series-Web-filtering-doesn-t-block-specifically-formatted-URLs-CVE-2026-57054" }, { "category": "external", "summary": "Reference - certbundde", "url": "https://supportportal.juniper.net/s/article/2026-07-Security-Bulletin-Junos-OS-MX-Series-with-SPC3-SRX-Series-A-specifically-malformed-TCP-packet-causes-a-flowd-crash-CVE-2026-57023" }, { "category": "external", "summary": "Reference - certbundde", "url": "https://supportportal.juniper.net/s/article/2026-07-Security-Bulletin-Junos-OS-MX-Series-with-SPC3-SRX-Series-Processing-of-a-specifically-malformed-SIP-invite-causes-a-flowd-crash-CVE-2026-57026" }, { "category": "external", "summary": "Reference - certbundde", "url": "https://supportportal.juniper.net/s/article/2026-07-Security-Bulletin-Junos-OS-MX-Series-with-SPC3-SRX-Series-Specific-packet-in-response-to-a-TCP-connection-establishment-by-the-affected-device-can-crash-the-PFE-CVE-2026-57022" }, { "category": "external", "summary": "Reference - certbundde", "url": "https://supportportal.juniper.net/s/article/2026-07-Security-Bulletin-Junos-OS-MX-with-SPC3-SRX-Series-Repeated-VPN-negotiation-failures-will-eventually-cause-iked-to-crash-continuously-CVE-2026-57024" }, { "category": "external", "summary": "Reference - certbundde", "url": "https://supportportal.juniper.net/s/article/2026-07-Security-Bulletin-Junos-OS-QFX10000-Series-IPv6-multicast-traffic-received-on-non-IRB-interfaces-causes-a-multicast-flood-CVE-2026-57020" }, { "category": "external", "summary": "Reference - certbundde", "url": "https://supportportal.juniper.net/s/article/2026-07-Security-Bulletin-Junos-OS-SRX-Series-Flow-sessions-are-not-getting-cleared-leading-to-a-DoS-CVE-2026-57030" }, { "category": "external", "summary": "Reference - certbundde", "url": "https://supportportal.juniper.net/s/article/2026-07-Security-Bulletin-Junos-OS-SRX-Series-If-VPN-compliance-check-is-configured-an-attacker-can-cause-http-gk-process-crash-CVE-2026-57021" }, { "category": "external", "summary": "Reference - cveprojectv5; nvd", "url": "https://supportportal.juniper.net/JSA110087" } ], "remediations": [ { "category": "none_available", "details": "There are no known workarounds for this issue.", "product_ids": [ "CSAFPID-8576187" ] } ], "scores": [ { "cvss_v3": { "version": "3.1", "vectorString": "CVSS:3.1/AV:A/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H", "baseScore": 6.5, "baseSeverity": "MEDIUM" }, "products": [ "CSAFPID-1253029", "CSAFPID-1341541", "CSAFPID-2162264", "CSAFPID-2669431", "CSAFPID-2669434", "CSAFPID-6016081", "CSAFPID-8576187", "CSAFPID-8596762", "CSAFPID-8596764", "CSAFPID-8596803", "CSAFPID-8596812" ] } ], "title": "CVE-2026-57027" } ] }