Vulnerability · Published Sep 16, 2026 · Assigned by Arista
CVE-2026-73454Security Advisory 0165
High 8.1
In plain English
A high-severity command 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 0.4% (higher than 34% of all known vulnerabilities).
Severity (CVSS 3.1)8.1High
Exploit odds (30 days)0.4%top 66.5% 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 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.
Affected products (as reported)
| Vendor | Product | Versions |
|---|---|---|
| Arista Networks | EOS | 4.30.0F – 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-77 · Vector: CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:N
References
- Arista Networks Security Advisory 0165 vendor-advisory