CVE-2026-73464 Security Advisory 0166
Authenticated attackers with gNMI access can execute arbitrary code with root privileges on Arista EOS switches.
- Exploited in the wild
- Not known
- Login needed
- Any signed-in user
- Attackable
- Over the internet
- Victim action needed
- Not needed
- Fix
- None listed
What is CVE-2026-73464?
CVE-2026-73464 is a high-severity code injection vulnerability in Arista Networks EOS, published on 16 Sep 2026. Any signed-in user can exploit it over the network, with no action from the victim.
Official description
On affected platforms running Arista EOS with gRPC Network Management Interface (gNMI) enabled, a specially crafted request could allow a malicious authenticated client with gRPC Network Management Interface (gNMI) access to execute arbitrary code with root privileges on the switch.
Weakness: CWE-94
Which versions are affected by CVE-2026-73464?
How do I fix CVE-2026-73464?
No fix has been published for CVE-2026-73464 yet. Limit exposure of the affected software until one is available.
Upgrade, and never evaluate templates, expressions or code built from user input. More about Code injection.
Is CVE-2026-73464 being exploited?
There is no known exploitation of CVE-2026-73464 in the wild and no public exploit code.
Sources
Also known as GHSA-hpwc-p8j3-f332.