CVE-2026-85431 MOOS essential-moos through 10.0.1 pMOOSBridge Unauthenticated UDP Packet Injection

High 8.7 Published 3 Sep 2026 Updated 4 Sep 2026

Attackers can inject arbitrary variables into the MOOS community via unauthenticated UDP packets when UDPListen is enabled, compromising data integrity.

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-2026-85431?

CVE-2026-85431 is a high-severity 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 through version 10.0.1 contains an unauthenticated UDP packet injection vulnerability in pMOOSBridge when configured with UDPListen. Attackers can send crafted UDP packets to the configured port to inject arbitrary variables into the local MOOS community with spoofed source and community identifiers.

Weakness: CWE-345

Which versions are affected by CVE-2026-85431?

It affects 1 product.

Products include Themoos Essential-Moos.

How do I fix CVE-2026-85431?

No fix has been published for CVE-2026-85431 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-2026-85431 being exploited?

There is no known exploitation of CVE-2026-85431 in the wild and no public exploit code.

Sources

Also known as GHSA-h924-38c9-hf7g.