{"affected":[{"defaultStatus":"unaffected","platforms":["710 Series","720D Series","720XP/722XPM Series","750X Series","7010TX Series","7020R/R4 Series","7260X/X3 Series","7280R/R2/R3/R4 Series","7050X3/X4 Series","7060X/X2/X4/X5/X6/XE7 Series","7300X/X3 Series","7320X Series","7358X4 Series","7368X4 Series","7388X5 Series","7500R/R2/R3 Series","7700R4 Series","7800R3/R4 Series"],"product":"EOS","source":"CNA: Arista","vendor":"Arista Networks","versions":[{"lessThan":"4.32.0F","status":"affected","version":"4.31.2F","versionType":"custom"},{"lessThan":"4.33.0F","status":"affected","version":"4.32.0F","versionType":"custom"},{"lessThanOrEqual":"4.33.9M","status":"affected","version":"4.33.0F","versionType":"custom"},{"lessThanOrEqual":"4.34.7M","status":"affected","version":"4.34.0F","versionType":"custom"},{"lessThanOrEqual":"4.35.5M","status":"affected","version":"4.35.0F","versionType":"custom"},{"lessThanOrEqual":"4.36.2F","status":"affected","version":"4.36.0F","versionType":"custom"}]}],"cveId":"CVE-2026-120977","cwes":["CWE-807"],"description":"On affected platforms running Arista EOS with 802.1X with Dynamic Host Configuration Protocol (DHCP) device profiling enabled, a network-adjacent attacker can send a crafted DHCP packet to force the device to record a spoofed device profile. This may potentially allow the authenticated supplicant to acquire unauthorized access to a network segment with elevated privileges.","epss":{"date":"2026-11-12","percentile":0.05301,"score":0.00161},"exploits":[],"kev":null,"metrics":[{"score":8.2,"severity":"high","source":"CNA: Arista","vector":"CVSS:3.1/AV:A/AC:L/PR:N/UI:N/S:C/C:L/I:H/A:N","version":"3.1"},{"score":7.1,"severity":"high","source":"CNA: Arista","vector":"CVSS:4.0/AV:A/AC:L/AT:P/PR:N/UI:N/VC:N/VI:H/VA:N/SC:L/SI:H/SA:N","version":"4.0"},{"score":7.1,"severity":"high","source":"NVD: psirt@arista.com","vector":"CVSS:4.0/AV:A/AC:L/AT:P/PR:N/UI:N/VC:N/VI:H/VA:N/SC:L/SI:H/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":8.2,"severity":"high","source":"NVD: psirt@arista.com","vector":"CVSS:3.1/AV:A/AC:L/PR:N/UI:N/S:C/C:L/I:H/A:N","version":"3.1"}],"modifiedAt":1794547092183,"publishedAt":1794341392143,"references":[{"source":"CNA: Arista","tags":["vendor-advisory"],"url":"https://www.arista.com/en/support/advisories-notices/security-advisory/25039-security-advisory-0217"},{"source":"psirt@arista.com","tags":[],"url":"https://www.arista.com/en/support/advisories-notices/security-advisory/25039-security-advisory-0217"}],"remediation":[],"revision":"fcaff84e5348a76946c4d20063d9da517a02e575d13ee154869f68daf96f3b7e","sources":[{"modifiedAt":1794546015677,"name":"CNA: Arista","retrievedAt":1794546519454,"url":"https://www.cve.org/CVERecord?id=CVE-2026-120977"},{"modifiedAt":1794547092183,"name":"NVD","retrievedAt":1794550577547,"url":"https://nvd.nist.gov/vuln/detail/CVE-2026-120977"},{"modifiedAt":null,"name":"FIRST EPSS","retrievedAt":1794546528292,"url":"https://api.first.org/data/v1/epss?cve=CVE-2026-120977"}],"ssvc":{"assessedAt":1794441600000,"automatable":"no","exploitation":"none","source":"ADP: CISA-ADP","technicalImpact":"total"},"status":"published","title":"Security Advisory 0217","updatedAt":1794550577547}