Vulnerability · Published Jun 4, 2026 · Assigned by Arista
CVE-2024-27890On affected platforms running Arista EOS with OpenConfig configured, a gNMI Set request can be run when it should have been rejected (No SSL Profiles Enabled).
Critical 9.6
In plain English
A critical-severity missing authentication 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 4.4% (higher than 91% of all known vulnerabilities).
Severity (CVSS 3.1)9.6Critical
Exploit odds (30 days)4.4%top 8.6% of all CVEs
Exploited in the wildNo reportsCISA SSVC: none
Attack toolingNoneno public tooling known
Official description
Affected platforms running Arista EOS with OpenConfig configured, a gNMI Set request can be run when it should have been rejected. This can result in unexpected configuration being applied to the switch.
Affected products (as reported)
| Vendor | Product | Versions |
|---|---|---|
| Arista Networks | EOS | 4.29.0 – through 4.29.7M4.28.0 – through 4.28.10M4.27.0 – through 4.27.8M4.26.0 – through 4.26.9M4.25.0 – through 4.25.10M4.24.0 – through 4.24.11M |
Weakness: CWE-306 · Vector: CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:N/I:H/A:H