{"id":"CVE-2025-60011","state":"PUBLISHED","title":"Junos OS and Junos OS Evolved: Optional transitive BGP attribute is modified before propagation to peers causing sessions to flap","description":"An Improper Check for Unusual or Exceptional Conditions vulnerability in the routing protocol daemon (rpd) of Juniper Networks Junos OS and Junos OS Evolved allows an unauthenticated, network-based attacker to cause an availability impact for downstream devices.\n\nWhen an affected device receives a specific optional, transitive BGP attribute over an existing BGP session, it will be erroneously modified before propagation to peers. When the attribute is detected as malformed by the peers, these peers will most likely terminate the BGP sessions with the affected devices and thereby cause an availability impact due to the resulting routing churn.\n\nThis issue affects:\n\nJunos OS:\n\n\n\n  *  all versions before 22.4R3-S8,\n  *  23.2 versions before 23.2R2-S5\n  *  23.4 versions before 23.4R2-S6,\n  *  24.2 versions before 24.2R2-S2,\n  *  24.4 versions before 24.4R2;\n\n\n\n\nJunos OS Evolved: \n\n\n\n  *  all versions before 22.4R3-S8-EVO,\n  *  23.2 versions before 23.2R2-S5-EVO,\n  *  23.4 versions before 23.4R2-S6-EVO,\n  *  24.2 versions before 24.2R2-S2-EVO,\n  *  24.4 versions before 24.4R2-EVO.","publishedAt":"2026-01-15T20:16:47.459Z","updatedAt":"2026-01-15T21:10:58.766Z","severity":{"score":6.9,"label":"Medium","version":"4.0","vector":"CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:N/VA:N/SC:N/SI:N/SA:L/AU:Y/R:U/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":"22.4R3-S8","versionType":"semver"},{"version":"23.2","status":"affected","lessThan":"23.2R2-S5","versionType":"semver"},{"version":"23.4","status":"affected","lessThan":"23.4R2-S6","versionType":"semver"},{"version":"24.2","status":"affected","lessThan":"24.2R2-S2","versionType":"semver"},{"version":"24.4","status":"affected","lessThan":"24.4R2","versionType":"semver"}]},{"vendor":"Juniper Networks","product":"Junos OS Evolved","defaultStatus":"unaffected","versions":[{"version":"0","status":"affected","lessThan":"22.4R3-S8-EVO","versionType":"semver"},{"version":"23.2","status":"affected","lessThan":"23.2R2-S5-EVO","versionType":"semver"},{"version":"23.4","status":"affected","lessThan":"23.4R2-S6-EVO","versionType":"semver"},{"version":"24.2","status":"affected","lessThan":"24.2R2-S2-EVO","versionType":"semver"},{"version":"24.4","status":"affected","lessThan":"24.4R2-EVO","versionType":"semver"}]}],"references":["https://supportportal.juniper.net/","https://kb.juniper.net/JSA103161"],"weaknesses":["CWE-754"],"ingestedAt":"2026-10-29T20:09:48.677Z","source":{"repository":"CVEProject/cvelistV5","path":"cves/2025/60xxx/CVE-2025-60011.json","commit":"556c9d3a8cd17e218bb8e452ba7cd619a384ff47"},"raw":{"dataType":"CVE_RECORD","dataVersion":"5.2","cveMetadata":{"cveId":"CVE-2025-60011","state":"PUBLISHED","datePublished":"2026-01-15T20:16:47.459Z","dateUpdated":"2026-01-15T21:10:58.766Z","assignerShortName":"juniper","assignerOrgId":"8cbe9d5a-a066-4c94-8978-4b15efeae968","dateReserved":"2025-09-23T18:19:06.961Z"},"containers":{"cna":{"title":"Junos OS and Junos OS Evolved: Optional transitive BGP attribute is modified before propagation to peers causing sessions to flap","descriptions":[{"lang":"en","value":"An Improper Check for Unusual or Exceptional Conditions vulnerability in the routing protocol daemon (rpd) of Juniper Networks Junos OS and Junos OS Evolved allows an unauthenticated, network-based attacker to cause an availability impact for downstream devices.\n\nWhen an affected device receives a specific optional, transitive BGP attribute over an existing BGP session, it will be erroneously modified before propagation to peers. When the attribute is detected as malformed by the peers, these peers will most likely terminate the BGP sessions with the affected devices and thereby cause an availability impact due to the resulting routing churn.\n\nThis issue affects:\n\nJunos OS:\n\n\n\n  *  all versions before 22.4R3-S8,\n  *  23.2 versions before 23.2R2-S5\n  *  23.4 versions before 23.4R2-S6,\n  *  24.2 versions before 24.2R2-S2,\n  *  24.4 versions before 24.4R2;\n\n\n\n\nJunos OS Evolved: \n\n\n\n  *  all versions before 22.4R3-S8-EVO,\n  *  23.2 versions before 23.2R2-S5-EVO,\n  *  23.4 versions before 23.4R2-S6-EVO,\n  *  24.2 versions before 24.2R2-S2-EVO,\n  *  24.4 versions before 24.4R2-EVO."}],"affected":[{"vendor":"Juniper Networks","product":"Junos OS","defaultStatus":"unaffected","versions":[{"version":"0","status":"affected","lessThan":"22.4R3-S8","versionType":"semver"},{"version":"23.2","status":"affected","lessThan":"23.2R2-S5","versionType":"semver"},{"version":"23.4","status":"affected","lessThan":"23.4R2-S6","versionType":"semver"},{"version":"24.2","status":"affected","lessThan":"24.2R2-S2","versionType":"semver"},{"version":"24.4","status":"affected","lessThan":"24.4R2","versionType":"semver"}]},{"vendor":"Juniper Networks","product":"Junos OS Evolved","defaultStatus":"unaffected","versions":[{"version":"0","status":"affected","lessThan":"22.4R3-S8-EVO","versionType":"semver"},{"version":"23.2","status":"affected","lessThan":"23.2R2-S5-EVO","versionType":"semver"},{"version":"23.4","status":"affected","lessThan":"23.4R2-S6-EVO","versionType":"semver"},{"version":"24.2","status":"affected","lessThan":"24.2R2-S2-EVO","versionType":"semver"},{"version":"24.4","status":"affected","lessThan":"24.4R2-EVO","versionType":"semver"}]}],"references":[{"url":"https://supportportal.juniper.net/","tags":["vendor-advisory"]},{"url":"https://kb.juniper.net/JSA103161","tags":["vendor-advisory"]}],"metrics":[{"cvssV3_1":{"attackComplexity":"LOW","attackVector":"NETWORK","availabilityImpact":"LOW","baseScore":5.8,"baseSeverity":"MEDIUM","confidentialityImpact":"NONE","integrityImpact":"NONE","privilegesRequired":"NONE","scope":"CHANGED","userInteraction":"NONE","vectorString":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:N/I:N/A:L","version":"3.1"},"format":"CVSS","scenarios":[{"lang":"en","value":"GENERAL"}]},{"cvssV4_0":{"Automatable":"YES","Recovery":"USER","Safety":"NOT_DEFINED","attackComplexity":"LOW","attackRequirements":"NONE","attackVector":"NETWORK","baseScore":6.9,"baseSeverity":"MEDIUM","privilegesRequired":"NONE","providerUrgency":"NOT_DEFINED","subAvailabilityImpact":"LOW","subConfidentialityImpact":"NONE","subIntegrityImpact":"NONE","userInteraction":"NONE","valueDensity":"NOT_DEFINED","vectorString":"CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:N/VA:N/SC:N/SI:N/SA:L/AU:Y/R:U/RE:M","version":"4.0","vulnAvailabilityImpact":"NONE","vulnConfidentialityImpact":"NONE","vulnIntegrityImpact":"NONE","vulnerabilityResponseEffort":"MODERATE"},"format":"CVSS","scenarios":[{"lang":"en","value":"GENERAL"}]}],"problemTypes":[{"descriptions":[{"cweId":"CWE-754","description":"CWE-754 Improper Check for Unusual or Exceptional Conditions","lang":"en","type":"CWE"}]}],"providerMetadata":{"shortName":"juniper","orgId":"8cbe9d5a-a066-4c94-8978-4b15efeae968","dateUpdated":"2026-01-15T20:16:47.459Z"},"configurations":[{"lang":"en","supportingMedia":[{"base64":false,"type":"text/html","value":"To be exposed to this issue BGP needs to be configured for at least two peers via:<br><br><tt>[ protocols bgp ... neighbor ... ]</tt>\n\n<br><br>"}],"value":"To be exposed to this issue BGP needs to be configured for at least two peers via:\n\n[ protocols bgp ... neighbor ... ]"}],"datePublic":"2026-01-14T17:00:00.000Z","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:<br>Junos OS Evolved: 22.4R3-S8-EVO, 23.2R2-S5-EVO, 23.4R2-S6-EVO, 24.2R2-S2-EVO, 24.4R2-EVO, 25.2R1-EVO, and all subsequent releases;<br>Junos OS: 22.4R3-S8, 23.2R2-S5, 23.4R2-S6, 24.2R2-S2, 24.4R2, 25.2R1, and all subsequent releases."}],"value":"The following software releases have been updated to resolve this specific issue:\nJunos OS Evolved: 22.4R3-S8-EVO, 23.2R2-S5-EVO, 23.4R2-S6-EVO, 24.2R2-S2-EVO, 24.4R2-EVO, 25.2R1-EVO, and all subsequent releases;\nJunos OS: 22.4R3-S8, 23.2R2-S5, 23.4R2-S6, 24.2R2-S2, 24.4R2, 25.2R1, and all subsequent releases."}],"source":{"advisory":"JSA103161","defect":["1884492"],"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":{"timestamp":"2026-01-15T21:10:41.872904Z","id":"CVE-2025-60011","options":[{"Exploitation":"none"},{"Automatable":"yes"},{"Technical Impact":"partial"}],"role":"CISA Coordinator","version":"2.0.3"}}}],"providerMetadata":{"shortName":"CISA-ADP","orgId":"134c704f-9b21-4f2e-91b3-4a467353bcc0","dateUpdated":"2026-01-15T21:10:58.766Z"}}]}}}