CVE-2026-73462 (GCVE-0-2026-73462)
Vulnerability from cvelistv5
Published
2026-09-16 19:01
Modified
2026-09-17 18:31
Severity ?
6.5 (Medium) - CVSS:3.1/AV:A/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
7.1 (High) - CVSS:4.0/AV:A/AC:L/AT:N/PR:N/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N
CWE
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 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.
References
Impacted products
Vendor Product Version
Arista Networks EOS Version: 4.36.0   <
Version: 4.35.0   <
Version: 4.34.0   <
Version: 4.33.0   <
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