A vulnerability was found in IBM MQ and MQ Appliance up to 9.3.5.1 CD/9.4.0.11 LTS/9.4.2.1 CD. It has been declared as critical. This vulnerability affects unknown code. The manipulation leads to use after free.

This vulnerability was named CVE-2025-3631. The attack can be initiated remotely. There is no exploit available.

It is recommended to upgrade the affected component.