Vulnerability · Published Sep 16, 2026 · Assigned by Arista
CVE-2026-73461Security Advisory 0163
High 8.0
In plain English
A high-severity security flaw in EOS from Arista Networks. There are no confirmed reports of exploitation so far. The chance it is exploited in the next 30 days is estimated at 0.4% (higher than 34% of all known vulnerabilities).
Severity (CVSS 3.1)8.0High
Exploit odds (30 days)0.4%top 66.2% of all CVEs
Exploited in the wildNo reportsCISA SSVC: none
Attack toolingNoneno public tooling known
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.
Affected products (as reported)
| Vendor | Product | Versions |
|---|---|---|
| Arista Networks | EOS | 4.29.0F – before 4.30.0F4.30.0F – before 4.31.0F4.31.0F – before 4.32.0F4.32.0F – through 4.32.11M4.33.0F – through 4.33.8M4.34.0F – through 4.34.7M4.35.0F – through 4.35.5M4.36.0F – through 4.36.0.1F |
Weakness: CWE-266 · Vector: CVSS:3.1/AV:N/AC:H/PR:H/UI:N/S:C/C:H/I:H/A:H
References
- Arista Networks Security Advisory 0163 vendor-advisory