{"id":"CVE-2026-73462","title":"On affected platforms running Arista EOS with IGMP (Internet Group Management Protocol) snooping configured (enabled by default on all VLANs), a network-adjacent unauthenticated attacker can send malformed network packets on an affected …","summary":"On affected platforms running Arista EOS with IGMP (Internet Group Management Protocol) snooping configured (enabled by default on all VLANs), a network-adjacent unauthenticated attacker can send malformed network packets on an affected …","severity":"medium","cvss":6.5,"cvssVector":"CVSS:3.1/AV:A/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H","cwe":["CWE-125"],"vendor":"Arista Networks","product":"EOS","affected":["EOS >= 4.36.0 <= 4.36.1F","EOS >= 4.35.0 <= 4.35.5M","EOS >= 4.34.0 <= 4.34.7.1M","EOS >= 4.33.0 <= 4.33.8M"],"published":"2026-09-16","updated":"2026-09-17","sourceUpdated":"2026-09-17T19:16:57.380","source":"NVD","sourceUrl":"https://nvd.nist.gov/vuln/detail/CVE-2026-73462","references":[{"url":"https://www.arista.com/en/support/advisories-notices/security-advisory/24715-security-advisory-0159","label":"psirt@arista.com"}],"tags":["nvd","cve.org"],"ssvc":{"exploitation":"none","automatable":"no","technicalImpact":"partial","timestamp":"2026-09-17T18:31:00.764860Z"},"ingestedAt":"2026-09-16T20:03:30.756Z","epss":0.00244,"epssPercentile":0.15944,"slug":"CVE-2026-73462","body":"## Overview\n\nOn affected platforms running Arista EOS with IGMP (Internet Group Management Protocol) snooping configured (enabled by default on all VLANs), a network-adjacent unauthenticated attacker can send malformed network packets on an affected VLAN to cause the IGMP snooping agent to terminate unexpectedly. This results in a temporary disruption of multicast traffic management, which may cause multicast traffic to be flooded to all ports of the affected VLAN until the service recovers. Repeated exploitation could result in a prolonged loss of intended multicast forwarding behavior.\n\n## Remediation\n\nRefer to the linked advisories for vendor-supplied fixes and affected version ranges.","depth":"sunlit","depthScore":36,"depthScoreParts":{"impact":35.8,"likelihood":0,"exploitation":0,"ransomware":0},"changes":[]}