CVE-2026-73461 Security Advisory 0163
Authenticated users can bypass intended privilege restrictions on OpenConfig gRPC requests when AAA authorization is enabled, leading to unauthorized access.
- Exploited in the wild
- Not known
- Login needed
- An administrator
- Attackable
- Over the internet
- Victim action needed
- Not needed
- Fix
- None listed
What is CVE-2026-73461?
CVE-2026-73461 is a critical missing authorization vulnerability in Arista Networks EOS, published on 16 Sep 2026. An attacker needs administrator access to exploit it, with no action from the victim.
Official description
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.
Weakness: CWE-266
Which versions are affected by CVE-2026-73461?
How do I fix CVE-2026-73461?
No fix has been published for CVE-2026-73461 yet. Limit exposure of the affected software until one is available.
Upgrade, and check permissions on every request on the server, not only in the interface. More about Missing authorization.
Is CVE-2026-73461 being exploited?
There is no known exploitation of CVE-2026-73461 in the wild and no public exploit code.
Sources
Also known as GHSA-cppj-w9qw-f23c.