{"dataType":"CVE_RECORD","dataVersion":"5.2","cveMetadata":{"cveId":"CVE-2026-121291","assignerOrgId":"c8b34d1a-69ae-45c3-88fe-f3b3d44f39b7","state":"PUBLISHED","assignerShortName":"Arista","dateReserved":"2026-11-03T11:21:01.892Z","datePublished":"2026-11-10T20:09:57.730Z","dateUpdated":"2026-11-13T17:27:40.172Z"},"containers":{"cna":{"providerMetadata":{"orgId":"c8b34d1a-69ae-45c3-88fe-f3b3d44f39b7","shortName":"Arista","dateUpdated":"2026-11-10T20:09:57.730Z"},"title":"Security Advisory 0222","descriptions":[{"lang":"en","value":"A crafted Error Report can leave EOS stuck believing that a cache reset is in progress, preventing ROA publication, withdrawal reconciliation, and BGP origin-validation updates."}],"affected":[{"vendor":"Arista Networks","product":"EOS","defaultStatus":"unaffected","versions":[{"version":"4.37.0F","status":"affected","versionType":"custom"},{"version":"4.36.0F","status":"affected","versionType":"custom","lessThanOrEqual":"4.36.2F"},{"version":"4.35.0F","status":"affected","versionType":"custom","lessThanOrEqual":"4.35.6M"}],"platforms":["710 Series","720D Series","720XP/722XPM Series","750X Series","7010TX Series","7020R/R4 Series","7130 Series running EOS","7170 Series","7050X3/X4 Series","7060X/X2/X4/X5/X6/XE7 Series","7260X/X3 Series","7280R/R2/R3/R4 Series","7300X/X3 Series","7320X Series","7358X4 Series","7368X4 Series","7388X5 Series","7500R/R2/R3 Series","7800R3/R4 Series","7700R4 Series","AWE 5000 Series","AWE 7200R Series","ZTX-7200 Series","CloudEOS","cEOS-lab","vEOS-lab","CloudVision eXchange, virtual or physical appliance"]}],"metrics":[{"cvssV3_1":{"version":"3.1","vectorString":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:H/A:L","baseScore":8.2,"baseSeverity":"HIGH"}},{"cvssV4_0":{"version":"4.0","vectorString":"CVSS:4.0/AV:N/AC:L/AT:P/PR:N/UI:N/VC:N/VI:H/VA:L/SC:N/SI:L/SA:N","baseScore":8.3,"baseSeverity":"HIGH"}}],"references":[{"url":"https://www.arista.com/en/support/advisories-notices/security-advisory/25044-security-advisory-0222","tags":["vendor-advisory"]}],"source":{"defects":["1936844"],"advisory":"Security Advisory 0222","discovery":"INTERNAL"},"problemTypes":[{"descriptions":[{"lang":"en","type":"CWE","cweId":"CWE-696","description":"CWE-696 Incorrect Behavior Order"}]}],"configurations":[{"lang":"en","value":"switch> show bgp rpki cache\n\nThe configuration should contain an RPKI cache entry under BGP:\n\nrouter bgp <ASN>\n     rpki cache <cache-name>\n        host <cache-address>","supportingMedia":[{"base64":false,"type":"text/html","value":"<pre>switch> show bgp rpki cache\n\nThe configuration should contain an RPKI cache entry under BGP:\n\nrouter bgp <ASN>\n     rpki cache <cache-name>\n        host <cache-address></pre>"}]}],"impacts":[{"capecId":"CAPEC-21","descriptions":[{"lang":"en","value":"CAPEC-21 Exploitation of Trusted Credentials"}]}]},"adp":[{"metrics":[{"other":{"type":"ssvc","content":{"timestamp":"2026-11-13T17:27:27.385133Z","id":"CVE-2026-121291","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":"2026-11-13T17:27:40.172Z"}}]}}