CVE-2026-76658 Unauthenticated Remote Code Execution in HPE Networking Fabric Composer SSH Daemon

Critical 10.0 Published 1 Sep 2026 Updated 1 Sep 2026

Unauthenticated remote attackers can bypass authentication in the SSH daemon to execute arbitrary commands with administrative privileges on HPE Fabric Composer hosts.

Exploited in the wild: Not known
Login needed: Not needed
Attackable: Over the internet
Victim action needed: Not needed
Fix: None listed

What is CVE-2026-76658?

CVE-2026-76658 is a critical authentication bypass vulnerability in Arubanetworks Fabric Composer, published on 1 Sep 2026. An attacker can exploit it over the internet without logging in, with no action from the victim.

Official description

A vulnerability has been identified in the SSH daemon of HPE Networking Fabric Composer that could allow an unauthenticated remote attacker to gain administrative access to vulnerable AFC hosts. Successful exploitation could allow an attacker to execute arbitrary commands as a privileged user on the underlying operating system leading to complete system compromise.

Weakness: CWE-287

Which versions are affected by CVE-2026-76658?

It affects 1 product.

Products include Arubanetworks Fabric Composer.

How do I fix CVE-2026-76658?

No fix has been published for CVE-2026-76658 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-2026-76658 being exploited?

There is no known exploitation of CVE-2026-76658 in the wild and no public exploit code.

All Arubanetworks Fabric Composer vulnerabilities

Sources

Also known as GHSA-p9f5-2p99-3r74.