{"id":"CVE-2026-77191","title":"An authenticated supplicant on an adjacent network may bypass intended network authorization policy and send unrestricted traffic during a brief window (milliseconds to seconds) between the completion of the authentication phase and the …","summary":"An authenticated supplicant on an adjacent network may bypass intended network authorization policy and send unrestricted traffic during a brief window (milliseconds to seconds) between the completion of the authentication phase and the …","severity":"low","cvss":2.6,"cvssVector":"CVSS:3.1/AV:A/AC:H/PR:L/UI:N/S:U/C:N/I:L/A:N","cwe":["CWE-862"],"vendor":"Arista Networks","product":"EOS","affected":["EOS >= 4.35.0 <= 4.35.0.3F","EOS >= 4.34.0 <= 4.34.5M","EOS >= 0.0.0 <= 4.33.7.1M"],"published":"2026-09-14","updated":"2026-09-16","sourceUpdated":"2026-09-16T20:36:52.890","source":"NVD","sourceUrl":"https://nvd.nist.gov/vuln/detail/CVE-2026-77191","references":[{"url":"https://www.arista.com/en/support/advisories-notices/security-advisory/24706-security-advisory-0150","label":"psirt@arista.com"}],"tags":["nvd","cve.org"],"epss":0.0014,"epssPercentile":0.03733,"ssvc":{"exploitation":"none","automatable":"no","technicalImpact":"partial","timestamp":"2026-09-15T13:40:55.120355Z"},"ingestedAt":"2026-09-14T23:17:06.519Z","slug":"CVE-2026-77191","body":"## Overview\n\nAn authenticated supplicant on an adjacent network may bypass intended network authorization policy and send unrestricted traffic during a brief window (milliseconds to seconds) between the completion of the authentication phase and the full enforcement of its assigned ACL.\n\n## Remediation\n\nRefer to the linked advisories for vendor-supplied fixes and affected version ranges.","depth":"sunlit","depthScore":14,"depthScoreParts":{"impact":14.3,"likelihood":0,"exploitation":0,"ransomware":0},"changes":[]}