{"dataType":"CVE_RECORD","dataVersion":"5.1","cveMetadata":{"cveId":"CVE-2025-52946","assignerOrgId":"8cbe9d5a-a066-4c94-8978-4b15efeae968","state":"PUBLISHED","assignerShortName":"juniper","dateReserved":"2025-06-23T13:16:01.408Z","datePublished":"2025-07-11T14:39:59.014Z","dateUpdated":"2025-07-11T15:25:30.605Z"},"containers":{"cna":{"affected":[{"defaultStatus":"unaffected","product":"Junos OS","vendor":"Juniper Networks","versions":[{"lessThan":"21.2R3-S9","status":"affected","version":"0","versionType":"semver"},{"lessThan":"*","status":"affected","version":"21.4","versionType":"sem"},{"lessThan":"22.2R3-S6","status":"affected","version":"22.2","versionType":"semver"},{"lessThan":"22.4R3-S5","status":"affected","version":"22.4","versionType":"semver"},{"lessThan":"23.2R2-S3","status":"affected","version":"23.2","versionType":"semver"},{"lessThan":"23.4R2-S4","status":"affected","version":"23.4","versionType":"semver"},{"lessThan":"24.2R2","status":"affected","version":"24.2","versionType":"semver"}]},{"defaultStatus":"unaffected","product":"Junos OS Evolved","vendor":"Juniper Networks","versions":[{"lessThan":"22.4R3-S5-EVO","status":"affected","version":"0","versionType":"semver"},{"lessThan":"23.2R2-S3-EVO","status":"affected","version":"23.2-EVO","versionType":"semver"},{"lessThan":"23.4R2-S4-EVO","status":"affected","version":"23.4-EVO","versionType":"semver"},{"lessThan":"24.2R2-EVO","status":"affected","version":"24.2-EVO","versionType":"semver"}]}],"configurations":[{"lang":"en","supportingMedia":[{"base64":false,"type":"text/html","value":"One of the following traceoptions configurations, either at the top level, under [logical-systems], or [routing-instances], is required to be potentially exposed to this issue:

[protocols bgp traceoptions]
[protocols bgp group <group-name> traceoptions]
[protocols bgp group <group-name> neighbor <address> traceoptions]\n\n
"}],"value":"One of the following traceoptions configurations, either at the top level, under [logical-systems], or [routing-instances], is required to be potentially exposed to this issue:\n\n[protocols bgp traceoptions]\n[protocols bgp group traceoptions]\n[protocols bgp group neighbor
traceoptions]"}],"datePublic":"2025-07-09T16:00:00.000Z","descriptions":[{"lang":"en","supportingMedia":[{"base64":false,"type":"text/html","value":"

A Use After Free vulnerability in the routing protocol daemon (rpd) of Juniper Networks Junos OS and Juniper Networks Junos OS Evolved allows an attacker sending a BGP update with a specifically malformed AS PATH to cause rpd to crash, resulting in a Denial of Service (DoS). Continuous receipt of the malformed AS PATH attribute will cause a sustained DoS condition.

On all Junos OS and Junos OS Evolved platforms, the rpd process will crash and restart when a specifically malformed AS PATH is received within a BGP update and traceoptions are enabled.

This issue only affects systems with BGP traceoptions enabled and requires a BGP session to be already established. Systems without BGP traceoptions enabled are not impacted by this issue.

This issue affects:

 Junos OS:

  • All versions before 21.2R3-S9, 
  • all versions of 21.4,
  • from 22.2 before 22.2R3-S6, 
  • from 22.4 before 22.4R3-S5, 
  • from 23.2 before 23.2R2-S3, 
  • from 23.4 before 23.4R2-S4, 
  • from 24.2 before 24.2R2; 

Junos OS Evolved: 

  • All versions before 22.4R3-S5-EVO, 
  • from 23.2-EVO before 23.2R2-S3-EVO, 
  • from 23.4-EVO before 23.4R2-S4-EVO, 
  • from 24.2-EVO before 24.2R2-EVO.

\n\n
This is a more complete fix for previously published CVE-2024-39549 (JSA83011).
"}],"value":"A Use After Free vulnerability in the routing protocol daemon (rpd) of Juniper Networks Junos OS and Juniper Networks Junos OS Evolved allows an attacker sending a BGP update with a specifically malformed AS PATH to cause rpd to crash, resulting in a Denial of Service (DoS). Continuous receipt of the malformed AS PATH attribute will cause a sustained DoS condition.\n\nOn all Junos OS and Junos OS Evolved platforms, the rpd process will crash and restart when a specifically malformed AS PATH is received within a BGP update and traceoptions are enabled.\n\nThis issue only affects systems with BGP traceoptions enabled and requires a BGP session to be already established. Systems without BGP traceoptions enabled are not impacted by this issue.\n\n\n\nThis issue affects:\n\n Junos OS:\n\n\n\n * All versions before 21.2R3-S9, \n * all versions of 21.4,\n * from 22.2 before 22.2R3-S6, \n * from 22.4 before 22.4R3-S5, \n * from 23.2 before 23.2R2-S3, \n * from 23.4 before 23.4R2-S4, \n * from 24.2 before 24.2R2; \n\n\n\n\nJunos OS Evolved: \n\n\n\n * All versions before 22.4R3-S5-EVO, \n * from 23.2-EVO before 23.2R2-S3-EVO, \n * from 23.4-EVO before 23.4R2-S4-EVO, \n * from 24.2-EVO before 24.2R2-EVO.\n\n\n\n\n\n\n\nThis is a more complete fix for previously published CVE-2024-39549 (JSA83011)."}],"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."}],"metrics":[{"cvssV3_1":{"attackComplexity":"LOW","attackVector":"NETWORK","availabilityImpact":"HIGH","baseScore":7.5,"baseSeverity":"HIGH","confidentialityImpact":"NONE","integrityImpact":"NONE","privilegesRequired":"NONE","scope":"UNCHANGED","userInteraction":"NONE","vectorString":"CVSS:3.1/AV:N/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":"NETWORK","baseScore":8.7,"baseSeverity":"HIGH","privilegesRequired":"NONE","providerUrgency":"NOT_DEFINED","subAvailabilityImpact":"LOW","subConfidentialityImpact":"NONE","subIntegrityImpact":"NONE","userInteraction":"NONE","valueDensity":"CONCENTRATED","vectorString":"CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:L/AU:Y/R:A/V:C/RE:M","version":"4.0","vulnAvailabilityImpact":"HIGH","vulnConfidentialityImpact":"NONE","vulnIntegrityImpact":"NONE","vulnerabilityResponseEffort":"MODERATE"},"format":"CVSS","scenarios":[{"lang":"en","value":"GENERAL"}]}],"problemTypes":[{"descriptions":[{"cweId":"CWE-416","description":"CWE-416 Use After Free","lang":"en","type":"CWE"}]}],"providerMetadata":{"orgId":"8cbe9d5a-a066-4c94-8978-4b15efeae968","shortName":"juniper","dateUpdated":"2025-07-11T14:39:59.014Z"},"references":[{"tags":["vendor-advisory"],"url":"https://supportportal.juniper.net/JSA100050"}],"solutions":[{"lang":"en","supportingMedia":[{"base64":false,"type":"text/html","value":"The following software releases have been updated to resolve this specific issue:
Junos OS 21.2R3-S9, 22.2R3-S6, 22.4R3-S5, 23.2R2-S3, 23.4R2-S4, 24.2R2, 24.4R1, and all subsequent releases.
Junos OS Evolved: 22.4R3-S5-EVO, 23.2R2-S3-EVO, 23.4R2-S4-EVO, 24.2R2-EVO, 24.4R1-EVO, and all subsequent releases.

"}],"value":"The following software releases have been updated to resolve this specific issue: \nJunos OS 21.2R3-S9, 22.2R3-S6, 22.4R3-S5, 23.2R2-S3, 23.4R2-S4, 24.2R2, 24.4R1, and all subsequent releases.\nJunos OS Evolved: 22.4R3-S5-EVO, 23.2R2-S3-EVO, 23.4R2-S4-EVO, 24.2R2-EVO, 24.4R1-EVO, and all subsequent releases."}],"source":{"advisory":"JSA100050","defect":["1810622"],"discovery":"USER"},"title":"Junos OS and Junos OS Evolved: With traceoptions enabled, receipt of malformed AS PATH causes RPD crash","workarounds":[{"lang":"en","supportingMedia":[{"base64":false,"type":"text/html","value":"Disable BGP traceoptions if they are not being used for active troubleshooting."}],"value":"Disable BGP traceoptions if they are not being used for active troubleshooting."}],"x_generator":{"engine":"Vulnogram 0.1.0-dev"}},"adp":[{"metrics":[{"other":{"type":"ssvc","content":{"timestamp":"2025-07-11T15:25:22.848492Z","id":"CVE-2025-52946","options":[{"Exploitation":"none"},{"Automatable":"yes"},{"Technical Impact":"partial"}],"role":"CISA Coordinator","version":"2.0.3"}}}],"title":"CISA ADP Vulnrichment","providerMetadata":{"orgId":"134c704f-9b21-4f2e-91b3-4a467353bcc0","shortName":"CISA-ADP","dateUpdated":"2025-07-11T15:25:30.605Z"}}]}}