{"id":"CVE-2025-21593","state":"PUBLISHED","title":"Junos OS and Junos OS Evolved: On SRv6 enabled devices, an attacker sending a malformed BGP update can cause the rpd to crash","description":"An Improper Control of a Resource Through its Lifetime vulnerability in the routing protocol daemon (rpd) of Juniper Networks Junos OS and Junos OS Evolved allows an unauthenticated network-based attacker to cause a Denial-of-Service (DoS).\n\nOn devices with SRv6 (Segment Routing over IPv6) enabled, an attacker can send a malformed BGP UPDATE packet which will cause the rpd to crash and restart. Continued receipt of these UPDATE packets will cause a sustained DoS condition. \n\nThis issue affects iBGP and eBGP, and both IPv4 and IPv6 are affected by this vulnerability.This issue affects Junos OS: \n\n\n\n  *  All versions before 21.2R3-S9, \n  *  from 21.4 before 21.4R3-S10, \n  *  from 22.2 before 22.2R3-S5, \n  *  from 22.3 before 22.3R3-S4, \n  *  from 22.4 before 22.4R3-S3, \n  *  from 23.2 before 23.2R2-S2, \n  *  from 23.4 before 23.4R2;\n\n\n\nand Junos OS Evolved: \n\n\n\n  *  All versions before 21.2R3-S9-EVO, \n  *  from 21.4-EVO before 21.4R3-S10-EVO, \n  *  from 22.2-EVO before 22.2R3-S5-EVO, \n  *  from 22.3-EVO before 22.3R3-S4-EVO, \n  *  from 22.4-EVO before 22.4R3-S3-EVO,\n  *  from 23.2-EVO before 23.2R2-S2-EVO, \n  *  from 23.4-EVO before 23.4R2-EVO.","publishedAt":"2025-01-09T16:41:09.326Z","updatedAt":"2025-01-09T19:22:40.654Z","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:N/R:A","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":"21.2R3-S9","versionType":"semver"},{"version":"21.4","status":"affected","lessThan":"21.4R3-S10","versionType":"semver"},{"version":"22.2","status":"affected","lessThan":"22.2R3-S5","versionType":"semver"},{"version":"22.3","status":"affected","lessThan":"22.3R3-S4","versionType":"semver"},{"version":"22.4","status":"affected","lessThan":"22.4R3-S3","versionType":"semver"},{"version":"23.2","status":"affected","lessThan":"23.2R2-S2","versionType":"semver"},{"version":"23.4","status":"affected","lessThan":"23.4R2","versionType":"semver"}]},{"vendor":"Juniper Networks","product":"Junos OS Evolved","defaultStatus":"unaffected","versions":[{"version":"0","status":"affected","lessThan":"21.2R3-S9-EVO","versionType":"semver"},{"version":"21.4-EVO","status":"affected","lessThan":"21.4R3-S10-EVO","versionType":"semver"},{"version":"22.2-EVO","status":"affected","lessThan":"22.2R3-S5-EVO","versionType":"semver"},{"version":"22.3-EVO","status":"affected","lessThan":"22.3R3-S4-EVO","versionType":"semver"},{"version":"22.4-EVO","status":"affected","lessThan":"22.4R3-S3-EVO","versionType":"semver"},{"version":"23.2-EVO","status":"affected","lessThan":"23.2R2-S2-EVO","versionType":"semver"},{"version":"23.4-EVO","status":"affected","lessThan":"23.4R2-EVO","versionType":"semver"}]}],"references":["https://supportportal.juniper.net/JSA92861"],"weaknesses":["CWE-664"],"ingestedAt":"2026-10-29T20:08:39.238Z","source":{"repository":"CVEProject/cvelistV5","path":"cves/2025/21xxx/CVE-2025-21593.json","commit":"556c9d3a8cd17e218bb8e452ba7cd619a384ff47"},"raw":{"dataType":"CVE_RECORD","dataVersion":"5.1","cveMetadata":{"cveId":"CVE-2025-21593","state":"PUBLISHED","datePublished":"2025-01-09T16:41:09.326Z","dateUpdated":"2025-01-09T19:22:40.654Z","assignerShortName":"juniper","assignerOrgId":"8cbe9d5a-a066-4c94-8978-4b15efeae968","dateReserved":"2024-12-26T14:47:11.668Z"},"containers":{"cna":{"title":"Junos OS and Junos OS Evolved: On SRv6 enabled devices, an attacker sending a malformed BGP update can cause the rpd to crash","descriptions":[{"lang":"en","value":"An Improper Control of a Resource Through its Lifetime vulnerability in the routing protocol daemon (rpd) of Juniper Networks Junos OS and Junos OS Evolved allows an unauthenticated network-based attacker to cause a Denial-of-Service (DoS).\n\nOn devices with SRv6 (Segment Routing over IPv6) enabled, an attacker can send a malformed BGP UPDATE packet which will cause the rpd to crash and restart. Continued receipt of these UPDATE packets will cause a sustained DoS condition. \n\nThis issue affects iBGP and eBGP, and both IPv4 and IPv6 are affected by this vulnerability.This issue affects Junos OS: \n\n\n\n  *  All versions before 21.2R3-S9, \n  *  from 21.4 before 21.4R3-S10, \n  *  from 22.2 before 22.2R3-S5, \n  *  from 22.3 before 22.3R3-S4, \n  *  from 22.4 before 22.4R3-S3, \n  *  from 23.2 before 23.2R2-S2, \n  *  from 23.4 before 23.4R2;\n\n\n\nand Junos OS Evolved: \n\n\n\n  *  All versions before 21.2R3-S9-EVO, \n  *  from 21.4-EVO before 21.4R3-S10-EVO, \n  *  from 22.2-EVO before 22.2R3-S5-EVO, \n  *  from 22.3-EVO before 22.3R3-S4-EVO, \n  *  from 22.4-EVO before 22.4R3-S3-EVO,\n  *  from 23.2-EVO before 23.2R2-S2-EVO, \n  *  from 23.4-EVO before 23.4R2-EVO."}],"affected":[{"vendor":"Juniper Networks","product":"Junos OS","defaultStatus":"unaffected","versions":[{"version":"0","status":"affected","lessThan":"21.2R3-S9","versionType":"semver"},{"version":"21.4","status":"affected","lessThan":"21.4R3-S10","versionType":"semver"},{"version":"22.2","status":"affected","lessThan":"22.2R3-S5","versionType":"semver"},{"version":"22.3","status":"affected","lessThan":"22.3R3-S4","versionType":"semver"},{"version":"22.4","status":"affected","lessThan":"22.4R3-S3","versionType":"semver"},{"version":"23.2","status":"affected","lessThan":"23.2R2-S2","versionType":"semver"},{"version":"23.4","status":"affected","lessThan":"23.4R2","versionType":"semver"}]},{"vendor":"Juniper Networks","product":"Junos OS Evolved","defaultStatus":"unaffected","versions":[{"version":"0","status":"affected","lessThan":"21.2R3-S9-EVO","versionType":"semver"},{"version":"21.4-EVO","status":"affected","lessThan":"21.4R3-S10-EVO","versionType":"semver"},{"version":"22.2-EVO","status":"affected","lessThan":"22.2R3-S5-EVO","versionType":"semver"},{"version":"22.3-EVO","status":"affected","lessThan":"22.3R3-S4-EVO","versionType":"semver"},{"version":"22.4-EVO","status":"affected","lessThan":"22.4R3-S3-EVO","versionType":"semver"},{"version":"23.2-EVO","status":"affected","lessThan":"23.2R2-S2-EVO","versionType":"semver"},{"version":"23.4-EVO","status":"affected","lessThan":"23.4R2-EVO","versionType":"semver"}]}],"references":[{"url":"https://supportportal.juniper.net/JSA92861","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":"NOT_DEFINED","Recovery":"AUTOMATIC","Safety":"NOT_DEFINED","attackComplexity":"LOW","attackRequirements":"NONE","attackVector":"ADJACENT","baseScore":7.1,"baseSeverity":"HIGH","privilegesRequired":"NONE","providerUrgency":"NOT_DEFINED","subAvailabilityImpact":"NONE","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:N/R:A","version":"4.0","vulnAvailabilityImpact":"HIGH","vulnConfidentialityImpact":"NONE","vulnIntegrityImpact":"NONE","vulnerabilityResponseEffort":"NOT_DEFINED"},"format":"CVSS","scenarios":[{"lang":"en","value":"GENERAL"}]}],"problemTypes":[{"descriptions":[{"cweId":"CWE-664","description":"CWE-664 Improper Control of a Resource Through its Lifetime","lang":"en","type":"CWE"}]}],"providerMetadata":{"shortName":"juniper","orgId":"8cbe9d5a-a066-4c94-8978-4b15efeae968","dateUpdated":"2025-01-09T16:41:09.326Z"},"configurations":[{"lang":"en","supportingMedia":[{"base64":false,"type":"text/html","value":"<p>The configuration required to hit the issue or be potentially exploited is as follows:</p><code>[&nbsp;</code>protocols bgp source-packet-routing srv6 locator ]<code></code><br>"}],"value":"The configuration required to hit the issue or be potentially exploited is as follows:\n\n[ protocols bgp source-packet-routing srv6 locator ]"}],"datePublic":"2025-01-08T17:00:00.000Z","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:&nbsp;21.2R3-S9, 21.4R3-S10, 22.2R3-S5, 22.3R3-S4, 22.4R3-S3, 23.2R2-S2, 23.4R2, 24.2R1, and all subsequent releases.<br>Junos OS Evolved: 21.2R3-S9-EVO, 21.4R3-S10-EVO, 22.2R3-S5-EVO, 22.3R3-S4-EVO, 22.4R3-S3-EVO, 23.2R2-S2-EVO, 23.4R2-EVO, 24.2R1-EVO, and all subsequent releases.<br>"}],"value":"The following software releases have been updated to resolve this specific issue:\nJunos OS: 21.2R3-S9, 21.4R3-S10, 22.2R3-S5, 22.3R3-S4, 22.4R3-S3, 23.2R2-S2, 23.4R2, 24.2R1, and all subsequent releases.\nJunos OS Evolved: 21.2R3-S9-EVO, 21.4R3-S10-EVO, 22.2R3-S5-EVO, 22.3R3-S4-EVO, 22.4R3-S3-EVO, 23.2R2-S2-EVO, 23.4R2-EVO, 24.2R1-EVO, and all subsequent releases."}],"source":{"advisory":"JSA92861","defect":["1806694"],"discovery":"INTERNAL"},"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":"2025-01-09T19:09:01.547955Z","id":"CVE-2025-21593","options":[{"Exploitation":"none"},{"Automatable":"no"},{"Technical Impact":"partial"}],"role":"CISA Coordinator","version":"2.0.3"}}}],"providerMetadata":{"shortName":"CISA-ADP","orgId":"134c704f-9b21-4f2e-91b3-4a467353bcc0","dateUpdated":"2025-01-09T19:22:40.654Z"}}]}}}