What’s Vulnerable › Vulnerabilities
CVE-2026-73445: Security Advisory 0167
- Severity: medium (CVSS 4.9 v3.1)
- Exploited in the wild: not listed in CISA KEV
- EPSS: 0.4% probability of exploitation in the next 30 days
- Public exploit or detection template: none known
- Published: 2026-09-16 · updated 2026-09-16
- Weakness: CWE-20
Description
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.
Affected products
- Arista Networks EOS: from 4.36.0F through 4.36.0.1F; from 4.35.0F through 4.35.5M; from 4.34.0F through 4.34.7M; from 4.33.0F through 4.33.8M; from 4.32.0F before 4.33.0F; from 4.31.0F before 4.32.0F — fixed in 4.32.0F, 4.33.0F
How to fix
Upgrade to a fixed version: Arista Networks EOS 4.32.0F, 4.33.0F. Check the vendor advisory for mitigations.
References
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