{"id":"CVE-2025-52953","state":"PUBLISHED","title":"Junos OS and Junos OS Evolved: An unauthenticated adjacent attacker sending a valid BGP UPDATE packet forces a BGP session reset","description":"An Expected Behavior Violation vulnerability in the routing protocol daemon (rpd) of Juniper Networks Junos OS and Junos OS Evolved allows an unauthenticated adjacent attacker sending a valid BGP UPDATE packet to cause a BGP session reset, resulting in a Denial of Service (DoS). \n\nContinuous receipt and processing of this packet will create a sustained Denial of Service (DoS) condition.\n\nThis issue affects iBGP and eBGP and both IPv4 and IPv6 are affected by this vulnerability.\n\nThis issue affects Junos OS:\n\n\n  *  All versions before 21.2R3-S9,\n  *  from 21.4 before 21.4R3-S11,\n  *  from 22.2 before 22.2R3-S7,\n  *  from 22.4 before 22.4R3-S7,\n  *  from 23.2 before 23.2R2-S4,\n  *  from 23.4 before 23.4R2-S4,\n  *  from 24.2 before 24.2R2,\n  *  from 24.4 before 24.4R1-S3, 24.4R2\n\n\nJunos OS Evolved:\n\n\n\n  *  All versions before 22.2R3-S7-EVO,\n  *  from 22.4-EVO before 22.4R3-S7-EVO,\n  *  from 23.2-EVO before 23.2R2-S4-EVO,\n  *  from 23.4-EVO before 23.4R2-S4-EVO,\n  *  from 24.2-EVO before 24.2R2-EVO,\n  *  from 24.4-EVO before 24.4R1-S3-EVO, 24.4R2-EVO.","publishedAt":"2025-07-11T15:04:55.140Z","updatedAt":"2025-07-11T20:11:26.659Z","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/V:C/RE:M/U:Amber","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-S11","versionType":"semver"},{"version":"22.2","status":"affected","lessThan":"22.2R3-S7","versionType":"semver"},{"version":"22.4","status":"affected","lessThan":"22.4R3-S7","versionType":"semver"},{"version":"23.2","status":"affected","lessThan":"23.2R2-S4","versionType":"semver"},{"version":"23.4","status":"affected","lessThan":"23.4R2-S4","versionType":"semver"},{"version":"24.2","status":"affected","lessThan":"24.2R2","versionType":"semver"},{"version":"24.4","status":"affected","lessThan":"24.4R1-S3, 24.4R2","versionType":"semver"}],"modules":["bgp"]},{"vendor":"Juniper Networks","product":"Junos OS Evolved","defaultStatus":"unaffected","versions":[{"version":"0","status":"affected","lessThan":"22.2R3-S7-EVO","versionType":"semver"},{"version":"22.4-EVO","status":"affected","lessThan":"22.4R3-S7-EVO","versionType":"semver"},{"version":"23.2-EVO","status":"affected","lessThan":"23.2R2-S4-EVO","versionType":"semver"},{"version":"23.4-EVO","status":"affected","lessThan":"23.4R2-S4-EVO","versionType":"semver"},{"version":"24.2-EVO","status":"affected","lessThan":"24.2R2-EVO","versionType":"semver"},{"version":"24.4-EVO","status":"affected","lessThan":"24.4R1-S3-EVO, 24.4R2-EVO","versionType":"semver"}],"modules":["bgp"]}],"references":["https://supportportal.juniper.net/JSA100059","https://www.juniper.net/documentation/us/en/software/junos/bgp/topics/task/routing-protocol-bgp-security-configuring.html"],"weaknesses":["CWE-440"],"ingestedAt":"2026-10-29T20:09:31.862Z","source":{"repository":"CVEProject/cvelistV5","path":"cves/2025/52xxx/CVE-2025-52953.json","commit":"556c9d3a8cd17e218bb8e452ba7cd619a384ff47"},"raw":{"dataType":"CVE_RECORD","dataVersion":"5.1","cveMetadata":{"cveId":"CVE-2025-52953","state":"PUBLISHED","datePublished":"2025-07-11T15:04:55.140Z","dateUpdated":"2025-07-11T20:11:26.659Z","assignerShortName":"juniper","assignerOrgId":"8cbe9d5a-a066-4c94-8978-4b15efeae968","dateReserved":"2025-06-23T13:16:01.409Z"},"containers":{"cna":{"title":"Junos OS and Junos OS Evolved: An unauthenticated adjacent attacker sending a valid BGP UPDATE packet forces a BGP session reset","descriptions":[{"lang":"en","value":"An Expected Behavior Violation vulnerability in the routing protocol daemon (rpd) of Juniper Networks Junos OS and Junos OS Evolved allows an unauthenticated adjacent attacker sending a valid BGP UPDATE packet to cause a BGP session reset, resulting in a Denial of Service (DoS). \n\nContinuous receipt and processing of this packet will create a sustained Denial of Service (DoS) condition.\n\nThis issue affects iBGP and eBGP and both IPv4 and IPv6 are affected by this vulnerability.\n\nThis issue affects Junos OS:\n\n\n  *  All versions before 21.2R3-S9,\n  *  from 21.4 before 21.4R3-S11,\n  *  from 22.2 before 22.2R3-S7,\n  *  from 22.4 before 22.4R3-S7,\n  *  from 23.2 before 23.2R2-S4,\n  *  from 23.4 before 23.4R2-S4,\n  *  from 24.2 before 24.2R2,\n  *  from 24.4 before 24.4R1-S3, 24.4R2\n\n\nJunos OS Evolved:\n\n\n\n  *  All versions before 22.2R3-S7-EVO,\n  *  from 22.4-EVO before 22.4R3-S7-EVO,\n  *  from 23.2-EVO before 23.2R2-S4-EVO,\n  *  from 23.4-EVO before 23.4R2-S4-EVO,\n  *  from 24.2-EVO before 24.2R2-EVO,\n  *  from 24.4-EVO before 24.4R1-S3-EVO, 24.4R2-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-S11","versionType":"semver"},{"version":"22.2","status":"affected","lessThan":"22.2R3-S7","versionType":"semver"},{"version":"22.4","status":"affected","lessThan":"22.4R3-S7","versionType":"semver"},{"version":"23.2","status":"affected","lessThan":"23.2R2-S4","versionType":"semver"},{"version":"23.4","status":"affected","lessThan":"23.4R2-S4","versionType":"semver"},{"version":"24.2","status":"affected","lessThan":"24.2R2","versionType":"semver"},{"version":"24.4","status":"affected","lessThan":"24.4R1-S3, 24.4R2","versionType":"semver"}],"modules":["bgp"]},{"vendor":"Juniper Networks","product":"Junos OS Evolved","defaultStatus":"unaffected","versions":[{"version":"0","status":"affected","lessThan":"22.2R3-S7-EVO","versionType":"semver"},{"version":"22.4-EVO","status":"affected","lessThan":"22.4R3-S7-EVO","versionType":"semver"},{"version":"23.2-EVO","status":"affected","lessThan":"23.2R2-S4-EVO","versionType":"semver"},{"version":"23.4-EVO","status":"affected","lessThan":"23.4R2-S4-EVO","versionType":"semver"},{"version":"24.2-EVO","status":"affected","lessThan":"24.2R2-EVO","versionType":"semver"},{"version":"24.4-EVO","status":"affected","lessThan":"24.4R1-S3-EVO, 24.4R2-EVO","versionType":"semver"}],"modules":["bgp"]}],"references":[{"url":"https://supportportal.juniper.net/JSA100059","tags":["vendor-advisory"]},{"url":"https://www.juniper.net/documentation/us/en/software/junos/bgp/topics/task/routing-protocol-bgp-security-configuring.html","tags":["technical-description"]}],"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":"AMBER","subAvailabilityImpact":"LOW","subConfidentialityImpact":"NONE","subIntegrityImpact":"NONE","userInteraction":"NONE","valueDensity":"CONCENTRATED","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/V:C/RE:M/U:Amber","version":"4.0","vulnAvailabilityImpact":"HIGH","vulnConfidentialityImpact":"NONE","vulnIntegrityImpact":"NONE","vulnerabilityResponseEffort":"MODERATE"},"format":"CVSS","scenarios":[{"lang":"en","value":"GENERAL"}]}],"problemTypes":[{"descriptions":[{"cweId":"CWE-440","description":"CWE-440 Expected Behavior Violation","lang":"en","type":"CWE"}]}],"providerMetadata":{"shortName":"juniper","orgId":"8cbe9d5a-a066-4c94-8978-4b15efeae968","dateUpdated":"2025-07-11T15:04:55.140Z"},"configurations":[{"lang":"en","supportingMedia":[{"base64":false,"type":"text/html","value":"One of the following minimal configurations is necessary to be exposed to this issue:<br><tt>&nbsp; [protocols bgp group &lt;group-name&gt; neighbor <span style=\"background-color: rgba(245, 248, 255, 0.5);\">&lt;peer-ip-address&gt;</span>&nbsp;family inet6-vpn unicast]<br></tt>or<br><tt>&nbsp; [protocols bgp group &lt;group-name&gt; family inet6-vpn unicast]<br>or<br></tt><tt>&nbsp; [protocols bgp family inet6-vpn unicast]</tt>"}],"value":"One of the following minimal configurations is necessary to be exposed to this issue:\n  [protocols bgp group <group-name> neighbor <peer-ip-address> family inet6-vpn unicast]\nor\n  [protocols bgp group <group-name> family inet6-vpn unicast]\nor\n  [protocols bgp family inet6-vpn unicast]"}],"datePublic":"2025-07-09T16:00:00.000Z","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: 21.2R3-S9, 21.4R3-S11, 22.2R3-S7, 22.4R3-S7, 23.2R2-S4, 23.4R2-S4, 24.2R2, 24.4R1-S3, 24.4R2, 25.2R1, and all subsequent releases.<br>Junos OS Evolved: 22.2R3-S7-EVO, 22.4R3-S7-EVO, 23.2R2-S4-EVO, 23.4R2-S4-EVO, 24.2R2-EVO, 24.4R1-S3-EVO, 24.4R2-EVO, 25.2R1-EVO,&nbsp;and all subsequent releases.<br><br>"}],"value":"The following software releases have been updated to resolve this specific issue:\nJunos OS: 21.2R3-S9, 21.4R3-S11, 22.2R3-S7, 22.4R3-S7, 23.2R2-S4, 23.4R2-S4, 24.2R2, 24.4R1-S3, 24.4R2, 25.2R1, and all subsequent releases.\nJunos OS Evolved: 22.2R3-S7-EVO, 22.4R3-S7-EVO, 23.2R2-S4-EVO, 23.4R2-S4-EVO, 24.2R2-EVO, 24.4R1-S3-EVO, 24.4R2-EVO, 25.2R1-EVO, and all subsequent releases."}],"source":{"advisory":"JSA100059","defect":["1855477"],"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":"2025-07-11T20:11:16.564518Z","id":"CVE-2025-52953","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":"2025-07-11T20:11:26.659Z"}}]}}}