CVE-2026-73454: Arista Networks EOS · Command Injection
Affects Arista Networks EOSSource CVE Database V5
Not known to be exploited · CVSS 8.1 High · fixed in 4.33.0F : patch Arista Networks EOS soon.
Data as of 31 Oct 2026, 20:20 UTC
- EPSS
- 0.3% chance of exploitation in 30 days – higher than 33% of CVEsExploit Prediction Scoring System: the likelihood attackers will use this flaw soon.
- Patch
- Available – fixed in 4.33.0F, 4.32.0F, 4.31.0F
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:NExploitation evidence
Disclosed: evidence found.
CVE published 16 Sep 2026
Detectable: no evidence on record.
No public nuclei template indexed
Weaponized: no evidence on record.
No public exploit code indexed in Metasploit or Exploit-DB
Exploited in the wildExploited: no evidence on record.
Not in CISA KEV and no source reports exploitation
Observed by OffSeq MirageSeen by Mirage: no evidence on record.
No attack traffic recorded by OffSeq Mirage sensors
A missing step is not evidence of safety. Sources: cve.org (opens in a new tab), the Metasploit, Exploit-DB and nuclei-templates index as of 31 Oct 2026.
What to do
Upgrade Arista Networks EOS to 4.33.0F, 4.32.0F or 4.31.0F.
Affected software
| Product | Affected | Fixed in |
|---|---|---|
| Arista NetworksEOS | Affected
| Fixed in
|
AI-suggested
If you cannot patch yet, restrict access to the gRPC Network Security Interface (gNSI) Credentialz configuration and monitor for unusual account property changes. Follow vendor instructions once patches or updates are released.
Description
CVE-2026-73454 is a command injection vulnerability in Arista Networks EOS affecting platforms with gRPC Network Security Interface (gNSI) Credentialz configured. A specially crafted request can cause unintended changes to account properties, potentially granting elevated privileges beyond intended administrative controls. The vulnerability is rated high severity with a CVSS score of 8.1. Multiple versions of EOS from 4.30.0F through 4.36.0.1F are affected.