CVE-2026-7473 | BDVDB-2026-338175 Detail

Description#

On affected platforms running Arista EOS where a tunnel decapsulation configuration—such as VXLAN (Virtual Extensible LAN), decap-groups, or a GRE (Generic Routing Encapsulation) tunnel interface—is present, the switch will incorrectly decapsulate and forward other unexpected tunneled packet with a destination IP matching its configured decapsulation IP. This occurs because the switch does not verify the tunnel protocol type, potentially leading to the unexpected processing of non-configured tunnel traffic. This issue has been reported as being exploited in the wild.

Impact#

Weaknesses#

References#

Exploit#

History#

1. Version 12026-06-05Record published in the CVE List.
2. Version 22026-10-07Most recent update recorded in the CVE List.