CVE-2025-3631

Name: CVE-2025-3631
Creator: NVD / NIST
Published: 2025-07-11T19:15:23.433+00:00
License: https://creativecommons.org/publicdomain/zero/1.0/

HIGHCVSS 7.5/10EPSS 0.31%

Last modified Jun 17, 2026

CVE-2025-3631 is a high-severity vulnerability rated 7.5/10 on the CVSS scale. 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.. EPSS estimates a 0.31% chance of exploitation in the next 30 days.

Description

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.

Metrics

CVSS 3.1

7.5/10

CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H

EPSS Probability

0.31%

22.5th percentile

Probability of exploitation in the next 30 days. Learn more

Weakness Enumeration

CWE-416

Affected Software

Vendor	Product	Versions
Ibm	Mq Appliance	>= 9.3.2, <= 9.3.5.2
Ibm	Mq Appliance	>= 9.4.0.0, < 9.4.0.12
Ibm	Mq Appliance	>= 9.4.0.0, < 9.4.3
Ibm	Mq Appliance	>= 9.4.1.0, < 9.4.3.0

References

https://www.ibm.com/support/pages/node/7237025Vendor Advisory
https://www.ibm.com/support/pages/node/7238310Vendor Advisory

Timeline

Published: Jul 11, 2025
Last Modified: Jun 17, 2026
Status: Analyzed

Frequently Asked Questions

What is CVE-2025-3631?

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.

How severe is CVE-2025-3631?

CVE-2025-3631 has a CVSS score of 7.5/10 (HIGH severity). The EPSS model estimates a 0.31% probability of exploitation in the next 30 days.

How do I fix CVE-2025-3631?

Check the vendor references and advisories linked above for patched versions and mitigation guidance. You can also run a Strix scan to test if your systems are affected.

Are you affected by CVE-2025-3631?

Run a free Strix scan to check your systems for this vulnerability.

Scan your code now

Source: NVD / NIST