CVE-2026-73776: Authenticated Signature Verification Bypass Leading to Arbitrary Code Execution in AOS-CX

Published Sep 1, 2026
·
Updated

A signature verification bypass vulnerability exists in the command line interface of AOS-CX. Successful exploitation could allow an authenticated malicious actor with administrative privileges to execute arbitrary code on the underlying operating system, when certain pre-conditions outside of the attacker’s control are met.

Affected Software

1 affected component
Arista Networks AOS-CX

Event History

Sep 1, 2026
CVE Published
via MITRE·08:28 PM
Data Sourced
via MITRE·08:28 PM
DescriptionSeverity

Frequently Asked Questions

1

Who can exploit this issue?

Exploitation requires an authenticated malicious actor with administrative privileges on the AOS-CX command line interface. It is therefore primarily relevant where administrative access has been granted to untrusted or compromised users.

2

What additional conditions are required for exploitation?

Certain pre-conditions outside the attacker’s control must be met. The available information does not identify those conditions, so administrators should consult the vendor advisory to determine whether their environment meets them.

3

What is the potential impact if exploitation succeeds?

A successful attacker could bypass signature verification and execute arbitrary code on the underlying operating system. The published vector indicates high confidentiality and integrity impact, with no stated availability impact.

Contact

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