{"id":"CVE-2026-120977","aliases":["EUVD-2026-122800","GHSA-jwg7-j8x7-q452"],"status":"published","title":"Security Advisory 0217","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.","severity":{"version":"4.0","score":7.1,"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","level":"high","assessor":"cna","from":"cve"},"epss":{"day":"2026-11-12","score":0.00161,"percentile":0.05301,"model":"v2026.06.15"},"facts":{"in_kev":false,"known_exploited":false,"public_exploit":false,"fix_available":false},"cwes":["CWE-807"],"published":"2026-11-10T20:09:52Z","modified":"2026-11-10T21:34:28Z","products":[{"vendor":"arista networks","product":"eos"}],"references":[{"url":"https://www.arista.com/en/support/advisories-notices/security-advisory/25039-security-advisory-0217","tags":["vendor-advisory"]},{"url":"https://nvd.nist.gov/vuln/detail/CVE-2026-120977"},{"url":"https://github.com/advisories/GHSA-jwg7-j8x7-q452"}],"sources":{"cve":[{"id":"CVE-2026-120977","title":"Security Advisory 0217","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.","status":"published","published":"2026-11-10T20:09:52.143Z","modified":"2026-11-10T20:09:52.143Z","cvss":[{"version":"4.0","score":7.1,"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","level":"high","assessor":"cna"},{"version":"3.1","score":8.2,"vector":"CVSS:3.1/AV:A/AC:L/PR:N/UI:N/S:C/C:L/I:H/A:N","level":"high","assessor":"cna"}],"cwes":["CWE-807"],"updated_at":"2026-11-10T22:18:26.309435Z"}],"euvd":[{"id":"EUVD-2026-122800","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.","status":"published","published":"2026-11-10T20:09:52Z","modified":"2026-11-10T20:09:52Z","cvss":[{"version":"4.0","score":7.1,"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","level":"high"}],"updated_at":"2026-11-11T00:25:01.852805Z"}],"ghsa":[{"id":"GHSA-jwg7-j8x7-q452","title":"On affected platforms running Arista EOS with 802.1X with Dynamic Host Configuration Protocol ...","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.","status":"published","published":"2026-11-10T21:34:27Z","modified":"2026-11-10T21:34:28Z","cvss":[{"version":"4.0","score":7.1,"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","level":"high"},{"version":"3.1","score":8.2,"vector":"CVSS:3.1/AV:A/AC:L/PR:N/UI:N/S:C/C:L/I:H/A:N","level":"high"}],"cwes":["CWE-807"],"updated_at":"2026-11-10T21:57:57.751909Z"}],"nvd":[{"id":"CVE-2026-120977","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.","status":"published","published":"2026-11-10T20:18:52.8Z","modified":"2026-11-10T20:18:52.8Z","cvss":[{"version":"4.0","score":7.1,"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","level":"high","assessor":"secondary"},{"version":"3.1","score":8.2,"vector":"CVSS:3.1/AV:A/AC:L/PR:N/UI:N/S:C/C:L/I:H/A:N","level":"high","assessor":"secondary"}],"cwes":["CWE-807"],"updated_at":"2026-11-10T22:21:33.392456Z"}]}}