{"id":"CVE-2025-2796","aliases":["EUVD-2025-16312","GHSA-2pf3-qwcm-2m4r"],"status":"published","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","description":"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.","severity":{"version":"3.1","score":5.3,"vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:L/A:N","level":"medium","assessor":"cna","from":"cve"},"epss":{"day":"2026-11-11","score":0.00203,"percentile":0.10396,"model":"v2026.06.15"},"facts":{"in_kev":false,"known_exploited":false,"public_exploit":false,"fix_available":false},"published":"2025-05-27T22:16:53Z","modified":"2026-06-17T09:07:38Z","products":[{"vendor":"arista networks","product":"eos"}],"references":[{"url":"https://www.arista.com/en/support/advisories-notices/security-advisory/21413-security-advisory-0119"},{"url":"https://nvd.nist.gov/vuln/detail/CVE-2025-2796"},{"url":"https://github.com/advisories/GHSA-2pf3-qwcm-2m4r"}],"sources":{"cve":[{"id":"CVE-2025-2796","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","description":"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.","status":"published","published":"2025-05-27T22:16:53.489Z","modified":"2025-05-28T13:34:30.912Z","cvss":[{"version":"3.1","score":5.3,"vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:L/A:N","level":"medium","assessor":"cna"}],"updated_at":"2026-11-02T14:32:38.70481Z"}],"euvd":[{"id":"EUVD-2025-16312","description":"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.","status":"published","published":"2025-05-27T22:16:53Z","modified":"2025-05-28T13:34:30Z","cvss":[{"version":"3.1","score":5.3,"vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:L/A:N","level":"medium"}],"updated_at":"2026-11-02T20:32:37.456975Z"}],"ghsa":[{"id":"GHSA-2pf3-qwcm-2m4r","title":"On affected platforms with hardware IPSec support running Arista EOS with IPsec enabled and anti...","description":"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.","status":"published","published":"2025-05-28T00:30:35Z","modified":"2025-05-28T00:30:45Z","cvss":[{"version":"3.1","score":5.3,"vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:L/A:N","level":"medium"}],"updated_at":"2026-11-02T15:02:27.370745Z"}],"nvd":[{"id":"CVE-2025-2796","description":"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.","status":"published","published":"2025-05-27T23:15:21.283Z","modified":"2026-06-17T09:07:38.017Z","cvss":[{"version":"3.1","score":5.3,"vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:L/A:N","level":"medium","assessor":"secondary"}],"updated_at":"2026-11-02T14:11:10.143444Z"}]}}