CVE-2026-19640

EUVD-2026-80325
On affected platforms running Arista EOS, an authenticated user with access to the gNMI (gRPC Network Management Interface) may receive incorrect authorization results, potentially allowing access beyond their currently assigned permissions.

This issue was discovered internally by Arista and the company is not aware of any malicious uses of this issue in customer networks.
ProviderTypeBase ScoreAtk. VectorAtk. ComplexityPriv. RequiredVector
NISTPrimary
4.2 MEDIUM
NETWORK
HIGH
LOW
CVSS:3.1/AV:N/AC:H/PR:L/UI:N/S:U/C:L/I:L/A:N
Awaiting analysis
This vulnerability is currently awaiting analysis.
Base Score
CVSS 3.x
EPSS Score
Percentile: 9.11%
Common Weakness Enumeration
References
https://www.arista.com/en/support/advisories-notices/security-advisory/24726-security-advisory-0170