{"dataType":"CVE_RECORD","dataVersion":"5.1","cveMetadata":{"cveId":"CVE-2025-2796","assignerOrgId":"c8b34d1a-69ae-45c3-88fe-f3b3d44f39b7","state":"PUBLISHED","assignerShortName":"Arista","dateReserved":"2025-03-25T16:27:53.397Z","datePublished":"2025-05-27T22:16:53.489Z","dateUpdated":"2025-05-28T13:34:30.912Z"},"containers":{"cna":{"affected":[{"defaultStatus":"unaffected","platforms":["EOS"],"product":"EOS","vendor":"Arista Networks","versions":[{"lessThanOrEqual":"4.33.2F","status":"affected","version":"4.33.0","versionType":"custom"}]}],"configurations":[{"lang":"en","supportingMedia":[{"base64":false,"type":"text/html","value":"<p>In order to be vulnerable to CVE-2025-2796, the following condition must be met:</p><p><b>anti-replay detection</b>&nbsp;must be configured in IPSec SA Policy:</p><pre>switch(config)# ip security\nswitch(config-ipsec)# sa policy sa1\nswitch(config-ipsec-sa1)# anti-replay detection</pre><br>"}],"value":"In order to be vulnerable to CVE-2025-2796, the following condition must be met:\n\nanti-replay detection must be configured in IPSec SA Policy:\n\nswitch(config)# ip security\nswitch(config-ipsec)# sa policy sa1\nswitch(config-ipsec-sa1)# anti-replay detection"}],"descriptions":[{"lang":"en","supportingMedia":[{"base64":false,"type":"text/html","value":"<p>On affected platforms with hardware IPSec support running Arista EOS with IPsec enabled and anti-replay protection configured, EOS may exhibit unexpected behavior in specific cases. Received duplicate encrypted packets, which should be dropped under normal anti-replay protection, will instead be forwarded due to this vulnerability.</p><p>Note: this issue does not affect VXLANSec or MACSec encryption functionality.</p><br>"}],"value":"On affected platforms with hardware IPSec support running Arista EOS with IPsec enabled and anti-replay protection configured, EOS may exhibit unexpected behavior in specific cases. Received duplicate encrypted packets, which should be dropped under normal anti-replay protection, will instead be forwarded due to this vulnerability.\n\nNote: this issue does not affect VXLANSec or MACSec encryption functionality."}],"impacts":[{"capecId":"CAPEC-60","descriptions":[{"lang":"en","value":"CAPEC-60 Reusing Session IDs (aka Session Replay)"}]}],"metrics":[{"cvssV3_1":{"attackComplexity":"LOW","attackVector":"NETWORK","availabilityImpact":"NONE","baseScore":5.3,"baseSeverity":"MEDIUM","confidentialityImpact":"NONE","integrityImpact":"LOW","privilegesRequired":"NONE","scope":"UNCHANGED","userInteraction":"NONE","vectorString":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:L/A:N","version":"3.1"},"format":"CVSS","scenarios":[{"lang":"en","value":"GENERAL"}]}],"problemTypes":[{"descriptions":[{"description":"cwe-284","lang":"en"}]}],"providerMetadata":{"orgId":"c8b34d1a-69ae-45c3-88fe-f3b3d44f39b7","shortName":"Arista","dateUpdated":"2025-05-27T22:16:53.489Z"},"references":[{"url":"https://www.arista.com/en/support/advisories-notices/security-advisory/21413-security-advisory-0119"}],"solutions":[{"lang":"en","supportingMedia":[{"base64":false,"type":"text/html","value":"<p>The recommended resolution is to upgrade to a remediated software version at your earliest convenience. Arista recommends customers move to the latest version of each release that contains all the fixes listed below. For more information about upgrading see <a target=\"_blank\" rel=\"nofollow\" href=\"https://www.arista.com/en/um-eos/eos-upgrades-and-downgrades\">EOS User Manual: Upgrades and Downgrades</a></p><div>CVE-2025-2796 has been fixed in the following releases:</div><ul><li>4.33.3M and later releases in the 4.33.x train</li></ul>"}],"value":"The recommended resolution is to upgrade to a remediated software version at your earliest convenience. Arista recommends customers move to the latest version of each release that contains all the fixes listed below. For more information about upgrading see  EOS User Manual: Upgrades and Downgrades https://www.arista.com/en/um-eos/eos-upgrades-and-downgrades \n\nCVE-2025-2796 has been fixed in the following releases:\n\n  *  4.33.3M and later releases in the 4.33.x train"}],"source":{"advisory":"SA119","defect":["BUG1073719"],"discovery":"INTERNAL"},"title":"On affected platforms with hardware IPSec support running Arista EOS with IPsec enabled and anti-replay protection configured, EOS may exhibit unexpected behavior in specific cases. Received duplicate encrypted packets, which should be dropped under normal","workarounds":[{"lang":"en","supportingMedia":[{"base64":false,"type":"text/html","value":"<span style=\"background-color: rgb(255, 255, 255);\">There is no known mitigation for CVE-2025-2796. The recommended resolution is to upgrade to a remediated software version at your earliest convenience.</span><br>"}],"value":"There is no known mitigation for CVE-2025-2796. The recommended resolution is to upgrade to a remediated software version at your earliest convenience."}],"x_generator":{"engine":"Vulnogram 0.2.0"}},"adp":[{"metrics":[{"other":{"type":"ssvc","content":{"timestamp":"2025-05-28T13:34:22.951770Z","id":"CVE-2025-2796","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":"2025-05-28T13:34:30.912Z"}}]}}