Improper input validation in Arista Networks Eos
CVE-2026-73445
On affected platforms running Arista EOS, an issue with the gRPC Network Security Interface (gNSI) Authz Rotate RPC may cause an incorrect Authz policy which was uploaded in the ongoing RPC stream to become active. This does not affect Bootz. This issue was discovered internally by Arista and the company is not aware of any malicious uses of this issue in customer networks.
Vulnerability class: Drupalgeddon 2 (CVE-2018-7600)
CVSS v3 metric
CVSS v3 base score 4.9 (Medium). Vector: CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:U/C:N/I:H/A:N.
Affected products
Weakness classification (CWE)
References
- psirt@arista.com (vendor-advisory)
Frequently asked questions
- What is CVE-2026-73445?
- CVE-2026-73445 is a medium-severity vulnerability in Arista Networks Eos, classified under Improper Input Validation. CVSS score: 4.9/10. Published 2026-09-16.
- How severe is CVE-2026-73445?
- Medium severity. CVSS v3 base score is 4.9 out of 10.