{"affected":[{"defaultStatus":"unaffected","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"],"product":"EOS","source":"CNA: Arista","vendor":"Arista Networks","versions":[{"lessThanOrEqual":"4.36.2F","status":"affected","version":"4.36.0F","versionType":"custom"},{"lessThanOrEqual":"4.35.6M","status":"affected","version":"4.35.0F","versionType":"custom"},{"lessThanOrEqual":"4.34.8M","status":"affected","version":"4.34.0F","versionType":"custom"},{"lessThanOrEqual":"4.33.10M","status":"affected","version":"4.33.0F","versionType":"custom"},{"lessThan":"4.33.0F","status":"affected","version":"4.32.0F","versionType":"custom"},{"lessThan":"4.32.0F","status":"affected","version":"4.22.1F","versionType":"custom"}]}],"cveId":"CVE-2026-121286","cwes":["CWE-476"],"description":"On affected platforms running Arista EOS in multi-agent routing model with BGP Segment Routing Traffic Engineering (SR-TE) address family configured, a BGP peer can send crafted BGP packets to cause the BGP process to restart, disrupting all BGP sessions on the device.","epss":{"date":"2026-11-13","percentile":0.21757,"score":0.00289},"exploits":[],"kev":null,"metrics":[{"score":6.5,"severity":"medium","source":"CNA: Arista","vector":"CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H","version":"3.1"},{"score":6,"severity":"medium","source":"CNA: Arista","vector":"CVSS:4.0/AV:N/AC:L/AT:P/PR:L/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N","version":"4.0"},{"score":6,"severity":"medium","source":"NVD: psirt@arista.com","vector":"CVSS:4.0/AV:N/AC:L/AT:P/PR:L/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X","version":"4.0"},{"score":6.5,"severity":"medium","source":"NVD: psirt@arista.com","vector":"CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H","version":"3.1"}],"modifiedAt":1794591338530,"publishedAt":1794341395398,"references":[{"source":"CNA: Arista","tags":["vendor-advisory"],"url":"https://www.arista.com/en/support/advisories-notices/security-advisory/25035-security-advisory-0213"},{"source":"psirt@arista.com","tags":[],"url":"https://www.arista.com/en/support/advisories-notices/security-advisory/25035-security-advisory-0213"}],"remediation":[{"kind":"workaround","source":"CNA: Arista","text":"For complete mitigation guidance and assistance, customers are advised to contact the Arista Networks Technical Assistance Center (TAC) for support."}],"revision":"f21e91a3d6507dac7d76bd6b662794b9e3824835841630e64e66093d1227f9bb","sources":[{"modifiedAt":1794591338530,"name":"CNA: Arista","retrievedAt":1794593317943,"url":"https://www.cve.org/CVERecord?id=CVE-2026-121286"},{"modifiedAt":1794511477847,"name":"NVD","retrievedAt":1794529283678,"url":"https://nvd.nist.gov/vuln/detail/CVE-2026-121286"},{"modifiedAt":null,"name":"FIRST EPSS","retrievedAt":1794593327244,"url":"https://api.first.org/data/v1/epss?cve=CVE-2026-121286"}],"ssvc":{"assessedAt":1794591326850,"automatable":"no","exploitation":"none","source":"ADP: CISA-ADP","technicalImpact":"partial"},"status":"published","title":"Security Advisory 0213","updatedAt":1794593327244}