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Arista EOS gNMI Fails to Enforce gNSI Pathz Policy When Both Group and User Rules Exist for the Same Path, Granting Unauthorized Access

Last refreshed2026-09-29

Status: NEW  |  Advisory ID: CVE-2026-73439

Key Details

CVECVE-2026-73439
CVSS Score / Version7.5 (High) / CVSS v3.1
Updated2026-09-17
CVSS VectorCVSS:3.1/AV:N/AC:H/PR:L/UI:N/S:U/C:H/I:H/A:H
CVSS Proseattack vector is network; attack complexity is high; privileges required is low; user interaction is none; scope is unchanged; confidentiality impact is high; integrity impact is high; availability impact is high.
Classified asCWE-842 (Placement of User into Incorrect Group)

What to Know

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. (NVD)

References

SourceReference
NVDhttps://nvd.nist.gov/vuln/detail/CVE-2026-73439
CVEhttps://www.cve.org/CVERecord?id=CVE-2026-73439