IBM MQ 9.3-9.4 AMQRMPPA Channel SIGSEGV Crash
CVE-2025-3631 Published on July 11, 2025
IBM MQ denial of service
An IBM MQ 9.3 and 9.4 Client connecting to an MQ Queue Manager can cause a SIGSEGV in the AMQRMPPA channel process terminating it.
Vulnerability Analysis
CVE-2025-3631 can be exploited with network access, and requires small amount of user privileges. This vulnerability is considered to have a low attack complexity. The potential impact of an exploit of this vulnerability is considered to have no impact on confidentiality and integrity, and a high impact on availability.
Weakness Type
What is a Dangling pointer Vulnerability?
Referencing memory after it has been freed can cause a program to crash, use unexpected values, or execute code.
CVE-2025-3631 has been classified to as a Dangling pointer vulnerability or weakness.
Products Associated with CVE-2025-3631
You can be notified by email with stack.watch whenever vulnerabilities like CVE-2025-3631 are published in these products:
Affected Versions
IBM MQ:- Version 9.3.2.0 CD, <= 9.3.5.1 CD is affected.
- Version 9.4.0.0, <= 9.4.2.1 CD is affected.
- Version 9.4.0.0 LTS, <= 9.4.0.11 LTS is affected.
- Version 9.3.2.0 CD, <= 9.3.5.2 CD is affected.
- Version 9.4.0.0 LTS, <= 9.4.0.11 LTS is affected.
- Version 9.4.1.0 CD, <= 9.4.2.1 CD is affected.
Exploit Probability
EPSS (Exploit Prediction Scoring System) scores estimate the probability that a vulnerability will be exploited in the wild within the next 30 days. The percentile shows you how this score compares to all other vulnerabilities.