CVE-2026-73454 Security Advisory 0165
Crafted gNSI requests allow attackers to modify account properties and gain elevated privileges on Arista EOS devices.
- 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-2026-73454?
CVE-2026-73454 is a high-severity 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 Security Interface (gNSI) Credentialz configured, a specially crafted request can cause unintended modifications to the target account's properties. This may result in the account being assigned elevated privileges or access beyond what an administrator intended.
Weakness: CWE-77
Which versions are affected by CVE-2026-73454?
How do I fix CVE-2026-73454?
No fix has been published for CVE-2026-73454 yet. Limit exposure of the affected software until one is available.
Is CVE-2026-73454 being exploited?
There is no known exploitation of CVE-2026-73454 in the wild and no public exploit code.
Sources
Also known as GHSA-9qm5-xc58-9xgf.