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.
History

Thu, 17 Sep 2026 21:15:00 +0000

Type Values Removed Values Added
First Time appeared Arista
Arista eos
Vendors & Products Arista
Arista eos

Wed, 16 Sep 2026 14:30:00 +0000

Type Values Removed Values Added
Metrics ssvc

{'options': {'Automatable': 'no', 'Exploitation': 'none', 'Technical Impact': 'partial'}, 'version': '2.0.3'}


Wed, 16 Sep 2026 09:30:00 +0000

Type Values Removed Values Added
Description 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.
Title Security Advisory 0170
Weaknesses CWE-863
References
Metrics cvssV3_1

{'score': 4.2, 'vector': 'CVSS:3.1/AV:N/AC:H/PR:L/UI:N/S:U/C:L/I:L/A:N'}

cvssV4_0

{'score': 2.3, 'vector': 'CVSS:4.0/AV:N/AC:L/AT:P/PR:L/UI:N/VC:L/VI:L/VA:N/SC:N/SI:N/SA:N'}


cve-icon MITRE

Status: PUBLISHED

Assigner: Arista

Published: 2026-09-16T09:11:32.329Z

Updated: 2026-09-16T13:57:56.343Z

Reserved: 2026-08-12T16:48:12.259Z

Link: CVE-2026-19640

cve-icon Vulnrichment

Updated: 2026-09-16T13:55:11.620Z

cve-icon NVD

Status : Awaiting Analysis

Published: 2026-09-16T10:16:50.943

Modified: 2026-09-16T19:08:50.420

Link: CVE-2026-19640

cve-icon Redhat

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