CVE-2026-85433 MOOS essential-moos through 10.0.1 pShare Unauthorized Runtime Route Reconfiguration

Critical 9.3 Published 3 Sep 2026 Updated 14 Sep 2026

Attackers can send unauthorized PSHARE_CMD messages to reconfigure network routes and listeners, allowing traffic redirection or duplication in MOOS systems.

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-2026-85433?

CVE-2026-85433 is a critical missing authorization vulnerability in themoos essential-moos, published on 3 Sep 2026. An attacker can exploit it over the internet without logging in, with no action from the victim.

Official description

MOOS essential-moos pShare through 10.0.1 fails to properly authorize PSHARE_CMD messages, allowing any publisher to reconfigure network routes and listeners at runtime. Attackers can send crafted PSHARE_CMD messages with cmd=output or cmd=input parameters to open new listeners on arbitrary addresses and redirect or duplicate bus traffic to attacker-controlled destinations.

Weakness: CWE-862

Which versions are affected by CVE-2026-85433?

It affects 1 product.

Products include Themoos Essential-Moos.

How do I fix CVE-2026-85433?

No fix has been published for CVE-2026-85433 yet. Limit exposure of the affected software until one is available.

Upgrade, and check permissions on every request on the server, not only in the interface. More about Missing authorization.

Is CVE-2026-85433 being exploited?

There is no known exploitation of CVE-2026-85433 in the wild and no public exploit code.

Sources

Also known as GHSA-vrg5-259h-pjj5.