{"id":"CVE-2026-120981","aliases":["EUVD-2026-122804","GHSA-2c52-hf3f-p2x2"],"status":"published","title":"Security Advisory 0214","description":"On affected platforms running Arista EOS with VPLS-BGP enabled, an attacker who has established a BGP session with the PE router can affect the route advertisements of VPLS pseudowires, causing a churn of the established routes with other legitimate BGP peers.","severity":{"version":"4.0","score":6,"vector":"CVSS:4.0/AV:N/AC:L/AT:P/PR:L/UI:N/VC:N/VI:N/VA:H/SC:N/SI:L/SA:L","level":"medium","assessor":"cna","from":"cve"},"epss":{"day":"2026-11-12","score":0.00266,"percentile":0.18708,"model":"v2026.06.15"},"facts":{"in_kev":false,"known_exploited":false,"public_exploit":false,"fix_available":false},"cwes":["CWE-772"],"published":"2026-11-10T20:09:54Z","modified":"2026-11-10T21:34:29Z","products":[{"vendor":"arista networks","product":"eos"}],"references":[{"url":"https://www.arista.com/en/support/advisories-notices/security-advisory/25036-security-advisory-0214","tags":["vendor-advisory"]},{"url":"https://nvd.nist.gov/vuln/detail/CVE-2026-120981"},{"url":"https://github.com/advisories/GHSA-2c52-hf3f-p2x2"}],"sources":{"cve":[{"id":"CVE-2026-120981","title":"Security Advisory 0214","description":"On affected platforms running Arista EOS with VPLS-BGP enabled, an attacker who has established a BGP session with the PE router can affect the route advertisements of VPLS pseudowires, causing a churn of the established routes with other legitimate BGP peers.","status":"published","published":"2026-11-10T20:09:54.017Z","modified":"2026-11-10T20:09:54.017Z","cvss":[{"version":"4.0","score":6,"vector":"CVSS:4.0/AV:N/AC:L/AT:P/PR:L/UI:N/VC:N/VI:N/VA:H/SC:N/SI:L/SA:L","level":"medium","assessor":"cna"},{"version":"3.1","score":5.3,"vector":"CVSS:3.1/AV:N/AC:H/PR:L/UI:N/S:U/C:N/I:N/A:H","level":"medium","assessor":"cna"}],"cwes":["CWE-772"],"updated_at":"2026-11-10T22:18:26.309435Z"}],"euvd":[{"id":"EUVD-2026-122804","description":"On affected platforms running Arista EOS with VPLS-BGP enabled, an attacker who has established a BGP session with the PE router can affect the route advertisements of VPLS pseudowires, causing a churn of the established routes with other legitimate BGP peers.","status":"published","published":"2026-11-10T20:09:54Z","modified":"2026-11-10T20:09:54Z","cvss":[{"version":"4.0","score":6,"vector":"CVSS:4.0/AV:N/AC:L/AT:P/PR:L/UI:N/VC:N/VI:N/VA:H/SC:N/SI:L/SA:L","level":"medium"}],"updated_at":"2026-11-11T00:25:01.852805Z"}],"ghsa":[{"id":"GHSA-2c52-hf3f-p2x2","title":"On affected platforms running Arista EOS with VPLS-BGP enabled, an attacker who has established a...","description":"On affected platforms running Arista EOS with VPLS-BGP enabled, an attacker who has established a BGP session with the PE router can affect the route advertisements of VPLS pseudowires, causing a churn of the established routes with other legitimate BGP peers.","status":"published","published":"2026-11-10T21:34:27Z","modified":"2026-11-10T21:34:29Z","cvss":[{"version":"4.0","score":6,"vector":"CVSS:4.0/AV:N/AC:L/AT:P/PR:L/UI:N/VC:N/VI:N/VA:H/SC:N/SI:L/SA:L/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","level":"medium"},{"version":"3.1","score":5.3,"vector":"CVSS:3.1/AV:N/AC:H/PR:L/UI:N/S:U/C:N/I:N/A:H","level":"medium"}],"cwes":["CWE-772"],"updated_at":"2026-11-10T21:57:57.751909Z"}],"nvd":[{"id":"CVE-2026-120981","description":"On affected platforms running Arista EOS with VPLS-BGP enabled, an attacker who has established a BGP session with the PE router can affect the route advertisements of VPLS pseudowires, causing a churn of the established routes with other legitimate BGP peers.","status":"published","published":"2026-11-10T20:18:53.36Z","modified":"2026-11-10T20:18:53.36Z","cvss":[{"version":"4.0","score":6,"vector":"CVSS:4.0/AV:N/AC:L/AT:P/PR:L/UI:N/VC:N/VI:N/VA:H/SC:N/SI:L/SA:L/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","level":"medium","assessor":"secondary"},{"version":"3.1","score":5.3,"vector":"CVSS:3.1/AV:N/AC:H/PR:L/UI:N/S:U/C:N/I:N/A:H","level":"medium","assessor":"secondary"}],"cwes":["CWE-772"],"updated_at":"2026-11-10T22:21:33.392456Z"}]}}