CVE-2026-73705 Authenticated Arbitrary File Write leads to Remote Code Execution in HPE Networking Fabric Composer

High 8.8 Published 1 Sep 2026 Updated 2 Sep 2026

Authenticated low-privilege users can write arbitrary files to escalate privileges and execute code on HPE Fabric Composer.

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

What is CVE-2026-73705?

CVE-2026-73705 is a high-severity vulnerability in Arubanetworks Fabric Composer, published on 1 Sep 2026. Any signed-in user can exploit it over the network, with no action from the victim.

Official description

An arbitrary file write vulnerability in the API of HPE Networking Fabric Composer could allow an authenticated low privilege operator user to escalate privileges. Successful exploitation of this vulnerability may enable the attacker to execute arbitrary commands on the underlying operating system, leading to complete compromise of the affected system.

Weakness: CWE-552

Which versions are affected by CVE-2026-73705?

It affects 1 product.

Products include Arubanetworks Fabric Composer.

How do I fix CVE-2026-73705?

No fix has been published for CVE-2026-73705 yet. Limit exposure of the affected software until one is available.

Is CVE-2026-73705 being exploited?

There is no known exploitation of CVE-2026-73705 in the wild and no public exploit code.

All Arubanetworks Fabric Composer vulnerabilities

Sources

Also known as GHSA-422h-h5vm-2pj7.