CVE-2026-73445 — MEDIUM (4.9)

Vulnerability 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.

CVSS Score

4.9

MEDIUM

CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:U/C:N/I:H/A:N

Attack Vector

NETWORK

Attack Complexity

LOW

Privileges Required

HIGH

User Interaction

NONE

Scope

UNCHANGED

Confidentiality

NONE

Integrity

HIGH

Availability

NONE

Related Weaknesses (CWE)

CWE-20

References

https://www.arista.com/en/support/advisories-notices/security-advisory/24723-sec

FAQ

What is CVE-2026-73445?

CVE-2026-73445 is a vulnerability with a CVSS score of 4.9 (MEDIUM). 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 ...

How severe is CVE-2026-73445?

CVE-2026-73445 has been rated MEDIUM with a CVSS base score of 4.9/10. Review the CVSS metrics above for detailed severity breakdown.

Is there a patch for CVE-2026-73445?

Check the references section above for vendor advisories and patch information. Review vendor security bulletins for remediation guidance.