CVE-2026-73439

Security Advisory 0164

State: Published
Severity: 7.7 High
Published: Sep 16, 2026
Updated: Sep 17, 2026
Reserved: Aug 12, 2026

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.

Scores

CVSS	Score	Vector	Source
4.0	7.7 High	CVSS:4.0/AV:N/AC:L/AT:P/PR:L/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N	Arista
3.1	7.5 High	CVSS:3.1/AV:N/AC:H/PR:L/UI:N/S:U/C:H/I:H/A:H	Arista

Weaknesses

CWE-842 Placement of User into Incorrect Group

Affected Products

Product	Versions
EOSArista Networks	4.33.2F through 4.33.8MAffected 4.34.0F through 4.34.6MAffected 4.35.0F through 4.35.5MAffected 4.36.0F through 4.36.0.1FAffected

References

Arista Networks Security Advisory 0164vendor-advisory

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