CVE-2026-10853 IBM MQ queue manager is vulnerable to remote code execution

High 7.5 Published 18 Sep 2026 Updated 21 Sep 2026

An authenticated attacker with cluster access can execute arbitrary code or cause denial of service in IBM MQ due to improper validation of message lengths.

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-2026-10853?

CVE-2026-10853 is a high-severity code injection vulnerability in Ibm Mq, published on 18 Sep 2026. Any signed-in user can exploit it over the network, with no action from the victim.

Official description

IBM MQ could allow an authenticated attacker with cluster access to cause a denial of service or potentially execute arbitrary code due to improper validation of cluster command message lengths.

Weakness: CWE-470

Which versions are affected by CVE-2026-10853?

It affects 1 product.

Products include Ibm Mq.

How do I fix CVE-2026-10853?

No fix has been published for CVE-2026-10853 yet. Limit exposure of the affected software until one is available.

Upgrade, and never evaluate templates, expressions or code built from user input. More about Code injection.

Is CVE-2026-10853 being exploited?

There is no known exploitation of CVE-2026-10853 in the wild and no public exploit code.

All Ibm Mq vulnerabilities

Sources

Also known as GHSA-pwg9-6g7w-xg4q.