CVE-2026-73726 Authentication Bypass in HPE Networking Fabric Composer allows Unauthorized Administrative Access

Medium 6.8 Published 1 Sep 2026 Updated 2 Sep 2026

Unauthenticated adjacent attackers can bypass authentication to gain administrative access, modify configurations, and manipulate sensitive data in HPE Fabric Composer.

Exploited in the wild: Not known
Login needed: Not needed
Attackable: Local or same network only
Victim action needed: Not needed
Fix: None listed

What is CVE-2026-73726?

CVE-2026-73726 is a medium-severity authentication bypass vulnerability in Arubanetworks Fabric Composer, published on 1 Sep 2026. It can only be exploited from the same machine or local network, with no action from the victim.

Official description

A vulnerability has been identified in the underlying operating system of HPE Networking Fabric Composer that could potentially allow an unauthenticated adjacent actor to circumvent existing authentication controls. Successful exploitation could allow an attacker to gain administrative access, modify system configurations, and access or manipulate sensitive data.

Weakness: CWE-306, CWE-287

Which versions are affected by CVE-2026-73726?

It affects 1 product.

Products include Arubanetworks Fabric Composer.

How do I fix CVE-2026-73726?

No fix has been published for CVE-2026-73726 yet. Limit exposure of the affected software until one is available.

Upgrade, and rotate credentials and sessions that may have been exposed. More about Authentication bypass.

Is CVE-2026-73726 being exploited?

There is no known exploitation of CVE-2026-73726 in the wild and no public exploit code.

All Arubanetworks Fabric Composer vulnerabilities

Sources

Also known as GHSA-c6vf-9qg7-rj38.