CVE-2026-19640
Security Advisory 0170
CVSS Score
4.2
EPSS Score
0.0%
EPSS Percentile
0th
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.
| CWE | CWE-863 |
| Vendor | arista networks |
| Product | eos |
| Published | Sep 16, 2026 |
| Last Updated | Sep 16, 2026 |
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CVSS v3 Breakdown
CVSS:3.1/AV:N/AC:H/PR:L/UI:N/S:U/C:L/I:L/A:N Attack Vector
Attack Complexity
Privileges Required
User Interaction
Scope
Confidentiality
Integrity
Availability
Affected Versions
Arista Networks / EOS
4.36.0F ≤ 4.36.0.1F 4.35.0F ≤ 4.35.5M 4.34.0F ≤ 4.34.7M 4.33.0F ≤ 4.33.8M 4.24.0F < 4.33.0F