Vulnerability · Published Sep 16, 2026 · Assigned by Arista
CVE-2026-73464Security Advisory 0166
High 8.8
In plain English
A high-severity code injection 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 0.6% (higher than 51% of all known vulnerabilities).
Severity (CVSS 3.1)8.8High
Exploit odds (30 days)0.6%top 49.2% of all CVEs
Exploited in the wildNo reportsCISA SSVC: none
Attack toolingNoneno public tooling known
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.
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 – before 4.33.0F4.33.0F – 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-94 · Vector: CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
References
- Arista Networks Security Advisory 0166 vendor-advisory