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.

Vendor Advisory Vendor Advisory NVD

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.

Exploitation:
NONE
Automatable:
NO
Technical Impact:
PARTIAL
Attack Vector:
NETWORK
Attack Complexity:
LOW
Privileges Required:
LOW
User Interaction:
NONE
Scope:
UNCHANGED
Confidentiality Impact:
NONE
Integrity Impact:
NONE
Availability Impact:
HIGH

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

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IBM Mq Appliance
IBM Mq

Affected Versions

IBM MQ: IBM MQ Appliance:

Exploit Probability

EPSS
0.38%
Percentile
31.97%

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.