{"id":"CVE-2026-102087","state":"PUBLISHED","title":"Junos OS and Junos OS Evolved: If in a traffic engineering scenario a specific valid BGP-LS attribute is received rpd crashes","description":"An Incomplete List of Disallowed Inputs vulnerability in the routing protocol daemon (rpd) of Juniper Networks Junos OS and Junos OS Evolved allows an unauthenticated, adjacent attacker to cause a Denial-of-Service (DoS).\n\nWhen in a BGP traffic engineering scenario a specific, valid, optional, non-transitive BGP update is received over an established BGP session, RPD crashes and automatically restarts, which leads to traffic impact until routing has reconverged.\n\nThis issue affects:\nJunos OS:\n\n\n  *  All versions before 23.2R2-S6;\n  *  23.4 versions before 23.4R2-S7;\n  *  24.2 versions before 24.2R2-S4;\n  *  24.4 versions before 24.4R2-S4;\n  *  25.2 versions before 25.2R1-S2, 25.2R2;\n\n\n\nJunos OS Evolved:\n  *  All versions before 23.2R2-S6-EVO;\n  *  23.4 versions before 23.4R2-S8.11-EVO;\n  *  24.2 versions before 24.2R2-S4-EVO;\n  *  24.4 versions before 24.4R2-S5-EVO;\n  *  25.2 versions before 25.2R1-S2-EVO, 25.2R2-EVO;","publishedAt":"2026-10-14T16:23:55.281Z","updatedAt":"2026-10-14T20:26:06.313Z","severity":{"score":7.1,"label":"High","version":"4.0","vector":"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","source":"juniper"},"assigner":"juniper","products":["Juniper Networks Junos OS","Juniper Networks Junos OS Evolved"],"affected":[{"vendor":"Juniper Networks","product":"Junos OS","defaultStatus":"unaffected","versions":[{"version":"0","status":"affected","lessThan":"23.2R2-S6","versionType":"custom"},{"version":"23.4","status":"affected","lessThan":"23.4R2-S7","versionType":"custom"},{"version":"24.2","status":"affected","lessThan":"24.2R2-S4","versionType":"custom"},{"version":"24.4","status":"affected","lessThan":"24.4R2-S4","versionType":"custom"},{"version":"25.2","status":"affected","lessThan":"25.2R1-S2, 25.2R2","versionType":"custom"}]},{"vendor":"Juniper Networks","product":"Junos OS Evolved","defaultStatus":"unaffected","versions":[{"version":"0","status":"affected","lessThan":"23.2R2-S6-EVO","versionType":"custom"},{"version":"23.4","status":"affected","lessThan":"23.4R2-S8.11-EVO","versionType":"custom"},{"version":"24.2","status":"affected","lessThan":"24.2R2-S4-EVO","versionType":"custom"},{"version":"24.4","status":"affected","lessThan":"24.4R2-S5-EVO","versionType":"custom"},{"version":"25.2","status":"affected","lessThan":"25.2R1-S2-EVO, 25.2R2-EVO","versionType":"custom"}]}],"references":["https://supportportal.juniper.net/JSA112168"],"weaknesses":["CWE-184"],"ingestedAt":"2026-10-29T20:10:13.529Z","source":{"repository":"CVEProject/cvelistV5","path":"cves/2026/102xxx/CVE-2026-102087.json","commit":"556c9d3a8cd17e218bb8e452ba7cd619a384ff47"},"raw":{"dataType":"CVE_RECORD","dataVersion":"5.2","cveMetadata":{"cveId":"CVE-2026-102087","state":"PUBLISHED","datePublished":"2026-10-14T16:23:55.281Z","dateUpdated":"2026-10-14T20:26:06.313Z","assignerShortName":"juniper","assignerOrgId":"8cbe9d5a-a066-4c94-8978-4b15efeae968","dateReserved":"2026-09-28T17:37:38.548Z"},"containers":{"cna":{"title":"Junos OS and Junos OS Evolved: If in a traffic engineering scenario a specific valid BGP-LS attribute is received rpd crashes","descriptions":[{"lang":"en","value":"An Incomplete List of Disallowed Inputs vulnerability in the routing protocol daemon (rpd) of Juniper Networks Junos OS and Junos OS Evolved allows an unauthenticated, adjacent attacker to cause a Denial-of-Service (DoS).\n\nWhen in a BGP traffic engineering scenario a specific, valid, optional, non-transitive BGP update is received over an established BGP session, RPD crashes and automatically restarts, which leads to traffic impact until routing has reconverged.\n\nThis issue affects:\nJunos OS:\n\n\n  *  All versions before 23.2R2-S6;\n  *  23.4 versions before 23.4R2-S7;\n  *  24.2 versions before 24.2R2-S4;\n  *  24.4 versions before 24.4R2-S4;\n  *  25.2 versions before 25.2R1-S2, 25.2R2;\n\n\n\nJunos OS Evolved:\n  *  All versions before 23.2R2-S6-EVO;\n  *  23.4 versions before 23.4R2-S8.11-EVO;\n  *  24.2 versions before 24.2R2-S4-EVO;\n  *  24.4 versions before 24.4R2-S5-EVO;\n  *  25.2 versions before 25.2R1-S2-EVO, 25.2R2-EVO;"}],"affected":[{"vendor":"Juniper Networks","product":"Junos OS","defaultStatus":"unaffected","versions":[{"version":"0","status":"affected","lessThan":"23.2R2-S6","versionType":"custom"},{"version":"23.4","status":"affected","lessThan":"23.4R2-S7","versionType":"custom"},{"version":"24.2","status":"affected","lessThan":"24.2R2-S4","versionType":"custom"},{"version":"24.4","status":"affected","lessThan":"24.4R2-S4","versionType":"custom"},{"version":"25.2","status":"affected","lessThan":"25.2R1-S2, 25.2R2","versionType":"custom"}]},{"vendor":"Juniper Networks","product":"Junos OS Evolved","defaultStatus":"unaffected","versions":[{"version":"0","status":"affected","lessThan":"23.2R2-S6-EVO","versionType":"custom"},{"version":"23.4","status":"affected","lessThan":"23.4R2-S8.11-EVO","versionType":"custom"},{"version":"24.2","status":"affected","lessThan":"24.2R2-S4-EVO","versionType":"custom"},{"version":"24.4","status":"affected","lessThan":"24.4R2-S5-EVO","versionType":"custom"},{"version":"25.2","status":"affected","lessThan":"25.2R1-S2-EVO, 25.2R2-EVO","versionType":"custom"}]}],"references":[{"url":"https://supportportal.juniper.net/JSA112168","tags":["vendor-advisory"]}],"metrics":[{"cvssV3_1":{"attackComplexity":"LOW","attackVector":"ADJACENT_NETWORK","availabilityImpact":"HIGH","baseScore":6.5,"baseSeverity":"MEDIUM","confidentialityImpact":"NONE","integrityImpact":"NONE","privilegesRequired":"NONE","scope":"UNCHANGED","userInteraction":"NONE","vectorString":"CVSS:3.1/AV:A/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H","version":"3.1"},"format":"CVSS","scenarios":[{"lang":"en","value":"GENERAL"}]},{"cvssV4_0":{"Automatable":"YES","Recovery":"AUTOMATIC","Safety":"NOT_DEFINED","attackComplexity":"LOW","attackRequirements":"NONE","attackVector":"ADJACENT","baseScore":7.1,"baseSeverity":"HIGH","privilegesRequired":"NONE","providerUrgency":"NOT_DEFINED","subAvailabilityImpact":"LOW","subConfidentialityImpact":"NONE","subIntegrityImpact":"NONE","userInteraction":"NONE","valueDensity":"NOT_DEFINED","vectorString":"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","version":"4.0","vulnAvailabilityImpact":"HIGH","vulnConfidentialityImpact":"NONE","vulnIntegrityImpact":"NONE","vulnerabilityResponseEffort":"MODERATE"},"format":"CVSS","scenarios":[{"lang":"en","value":"GENERAL"}]}],"problemTypes":[{"descriptions":[{"cweId":"CWE-184","description":"CWE-184 Incomplete Blacklist","lang":"en","type":"CWE"}]}],"providerMetadata":{"shortName":"juniper","orgId":"8cbe9d5a-a066-4c94-8978-4b15efeae968","dateUpdated":"2026-10-14T16:23:55.281Z"},"configurations":[{"lang":"en","supportingMedia":[{"base64":false,"type":"text/html","value":"To be exposed to this issue the system needs to be configured with:<br><br><tt>[ protocols bgp ... family traffic-engineering ]<br><br>[ policy-options&nbsp;policy-statement &lt;name&gt;&nbsp;from&nbsp;family traffic-engineering ]<br>\n\n[ policy-options policy-statement &lt;name&gt; from family traffic-engineering then accept ]<br>[ protocols mpls&nbsp;traffic-engineering&nbsp;database export&nbsp;policy &lt;name&gt; ]<br><br></tt>"}],"value":"To be exposed to this issue the system needs to be configured with:\n\n[ protocols bgp ... family traffic-engineering ]\n\n[ policy-options policy-statement <name> from family traffic-engineering ]\n\n\n[ policy-options policy-statement <name> from family traffic-engineering then accept ]\n[ protocols mpls traffic-engineering database export policy <name> ]"}],"datePublic":"2026-10-14T16:00:00.000Z","exploits":[{"lang":"en","supportingMedia":[{"base64":false,"type":"text/html","value":"Juniper SIRT is not aware of any malicious exploitation of this vulnerability."}],"value":"Juniper SIRT is not aware of any malicious exploitation of this vulnerability."}],"solutions":[{"lang":"en","supportingMedia":[{"base64":false,"type":"text/html","value":"The following software releases have been updated to resolve this specific issue:\n<br>\nJunos OS: 23.2R2-S6, 23.4R2-S7, 24.2R2-S4, 24.4R2-S4, 25.2R1-S2, 25.2R2, 25.4R1, and all subsequent releases;<br>Junos OS Evolved: 23.2R2-S6-EVO, 23.4R2-S8.11-EVO, 24.2R2-S4-EVO, 24.4R2-S5-EVO, 25.2R1-S2-EVO, 25.2R2-EVO, 25.4R1-EVO, and all subsequent releases.<br>\n\n<b></b>\n\n<b>Note:</b> For Junos OS releases 23.2, 23.4, and 24.2, and Junos OS Evolved releases 23.2-EVO, 23.4-EVO, and 24.2-EVO, specific respins have been referenced. Previously published versions of these releases have been rebuilt to resolve the security vulnerabilities identified in this advisory.\n\n\n\n<br>"}],"value":"The following software releases have been updated to resolve this specific issue:\n\n\nJunos OS: 23.2R2-S6, 23.4R2-S7, 24.2R2-S4, 24.4R2-S4, 25.2R1-S2, 25.2R2, 25.4R1, and all subsequent releases;\nJunos OS Evolved: 23.2R2-S6-EVO, 23.4R2-S8.11-EVO, 24.2R2-S4-EVO, 24.4R2-S5-EVO, 25.2R1-S2-EVO, 25.2R2-EVO, 25.4R1-EVO, and all subsequent releases.\n\n\n\n\nNote: For Junos OS releases 23.2, 23.4, and 24.2, and Junos OS Evolved releases 23.2-EVO, 23.4-EVO, and 24.2-EVO, specific respins have been referenced. Previously published versions of these releases have been rebuilt to resolve the security vulnerabilities identified in this advisory."}],"source":{"advisory":"JSA112168","defect":["1908614"],"discovery":"USER"},"workarounds":[{"lang":"en","supportingMedia":[{"base64":false,"type":"text/html","value":"There are no known workarounds for this issue."}],"value":"There are no known workarounds for this issue."}],"x_generator":{"engine":"Vulnogram 0.1.0-dev"}},"adp":[{"title":"CISA ADP Vulnrichment","metrics":[{"other":{"type":"ssvc","content":{"id":"CVE-2026-102087","role":"CISA Coordinator","options":[{"Exploitation":"none"},{"Automatable":"no"},{"Technical Impact":"partial"}],"version":"2.0.3","timestamp":"2026-10-14T20:16:18.843641Z"}}}],"providerMetadata":{"shortName":"CISA-ADP","orgId":"134c704f-9b21-4f2e-91b3-4a467353bcc0","dateUpdated":"2026-10-14T20:26:06.313Z"}}]}}}