{"attribution":"This product uses data from the NVD API but is not endorsed or certified by the NVD.","cve":{"id":"CVE-2026-120977","sourceIdentifier":"psirt@arista.com","published":"2026-11-10T20:18:52.800","lastModified":"2026-11-10T20:18:52.800","vulnStatus":"Received","cveTags":[],"descriptions":[{"lang":"en","value":"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."}],"affected":[{"source":"psirt@arista.com","affectedData":[{"vendor":"Arista Networks","product":"EOS","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"],"versions":[{"version":"4.31.2F","lessThan":"4.32.0F","versionType":"custom","status":"affected"},{"version":"4.32.0F","lessThan":"4.33.0F","versionType":"custom","status":"affected"},{"version":"4.33.0F","lessThanOrEqual":"4.33.9M","versionType":"custom","status":"affected"},{"version":"4.34.0F","lessThanOrEqual":"4.34.7M","versionType":"custom","status":"affected"},{"version":"4.35.0F","lessThanOrEqual":"4.35.5M","versionType":"custom","status":"affected"},{"version":"4.36.0F","lessThanOrEqual":"4.36.2F","versionType":"custom","status":"affected"}]}]}],"metrics":{"cvssMetricV40":[{"source":"psirt@arista.com","type":"Secondary","cvssData":{"version":"4.0","vectorString":"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","baseScore":7.1,"baseSeverity":"HIGH","attackVector":"ADJACENT","attackComplexity":"LOW","attackRequirements":"PRESENT","privilegesRequired":"NONE","userInteraction":"NONE","vulnConfidentialityImpact":"NONE","vulnIntegrityImpact":"HIGH","vulnAvailabilityImpact":"NONE","subConfidentialityImpact":"LOW","subIntegrityImpact":"HIGH","subAvailabilityImpact":"NONE","exploitMaturity":"NOT_DEFINED","confidentialityRequirement":"NOT_DEFINED","integrityRequirement":"NOT_DEFINED","availabilityRequirement":"NOT_DEFINED","modifiedAttackVector":"NOT_DEFINED","modifiedAttackComplexity":"NOT_DEFINED","modifiedAttackRequirements":"NOT_DEFINED","modifiedPrivilegesRequired":"NOT_DEFINED","modifiedUserInteraction":"NOT_DEFINED","modifiedVulnConfidentialityImpact":"NOT_DEFINED","modifiedVulnIntegrityImpact":"NOT_DEFINED","modifiedVulnAvailabilityImpact":"NOT_DEFINED","modifiedSubConfidentialityImpact":"NOT_DEFINED","modifiedSubIntegrityImpact":"NOT_DEFINED","modifiedSubAvailabilityImpact":"NOT_DEFINED","Safety":"NOT_DEFINED","Automatable":"NOT_DEFINED","Recovery":"NOT_DEFINED","valueDensity":"NOT_DEFINED","vulnerabilityResponseEffort":"NOT_DEFINED","providerUrgency":"NOT_DEFINED"}}],"cvssMetricV31":[{"source":"psirt@arista.com","type":"Secondary","cvssData":{"version":"3.1","vectorString":"CVSS:3.1/AV:A/AC:L/PR:N/UI:N/S:C/C:L/I:H/A:N","baseScore":8.2,"baseSeverity":"HIGH","attackVector":"ADJACENT_NETWORK","attackComplexity":"LOW","privilegesRequired":"NONE","userInteraction":"NONE","scope":"CHANGED","confidentialityImpact":"LOW","integrityImpact":"HIGH","availabilityImpact":"NONE"},"exploitabilityScore":2.8,"impactScore":4.7}]},"weaknesses":[{"source":"psirt@arista.com","type":"Secondary","description":[{"lang":"en","value":"CWE-807"}]}],"references":[{"url":"https://www.arista.com/en/support/advisories-notices/security-advisory/25039-security-advisory-0217","source":"psirt@arista.com"}]}}