CVE-2026-73461: Arista Networks Eos

High severity, CVSS 8.0. EPSS: 0.4% chance of exploitation in the next 30 days.

On affected EOS platforms with AAA-based gRPC authorization enabled for OpenConfig, gRPC requests of an authenticated user to OpenConfig may use the wrong privilege level, resulting in an authorization using the wrong AAA method list. This does not impact non-gRPC OpenConfig requests such as NETCONF.

Affected products

• Arista Networks Eos: from 4.29.0F, before 4.30.0F (fixed in 4.30.0F); from 4.30.0F, before 4.31.0F (fixed in 4.31.0F); from 4.31.0F, before 4.32.0F (fixed in 4.32.0F); from 4.32.0F, up to and including 4.32.11M; from 4.33.0F, up to and including 4.33.8M; from 4.34.0F, up to and including 4.34.7M; …

Published 2026-09-16. Last modified 2026-09-17.