CVE-2026-73439
High
Description
On affected platforms running Arista EOS, if OpenConfig is configured and running a gNMI server on the system, and if gNSI Pathz is configured and a gNSI Pathz policy is present on the system, then gNMI may fail to correctly enforce the rules in this policy if both a group rule and a user rule for the same path is present in the policy. Under certain conditions, this can lead to an authenticated user gaining unauthorized permission to read or write gNMI paths that the Pathz policy is intended to restrict.
SeverityHigh
CVSS7.5
Exploit probability—
ProductEOS
PublishedSep 16, 2026
First seenSep 16, 2026
Weakness typeCWE-842CWE-842
How to fix
Affected products
| Product | Affected versions | Fixed in |
|---|---|---|
| Arista Networks EOS | 4.33.2F ≤ v ≤ 4.33.8M, 4.34.0F ≤ v ≤ 4.34.6M, 4.35.0F ≤ v ≤ 4.35.5M, 4.36.0F ≤ v ≤ 4.36.0.1F | — |
Check your version
Choose the product and enter the version you run to see whether it falls in the affected range.
In the Intelligence 360 plan
Attack Surface Management
See the assets tied to your domains, the technologies they run and known vulnerabilities in one list.