CVE-2025-3631
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.
Attack profile
How easy it is to exploit
- Attack vector
- Network
- Complexity
- Low
- Privileges needed
- Low
- User interaction
- None
What an attacker can affect
- Confidentiality
- None
- Integrity
- None
- Availability
- High
Exploit likelihood
What each source reports
CVE List Score used
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.
- Record
CVE-2025-3631- CVSS 3.1
- 6.5 Medium
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H - Weakness
- CWE-416
- Updated
- 2026-11-02
EUVDEUVD-2025-21175
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.
- Record
EUVD-2025-21175- CVSS 3.1
- 6.5 Medium
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H - Updated
- 2026-11-02
GitHub AdvisoriesGHSA-mprx-jp8f-rw8w
An IBM MQ 9.3 and 9.4 Client connecting to an MQ Queue Manager can cause a SIGSEGV in the...
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.
- Record
GHSA-mprx-jp8f-rw8w- CVSS 3.1
- 6.5 Medium
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H - Weakness
- CWE-416
- Updated
- 2026-11-02
NVD
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.
- Record
CVE-2025-3631- CVSS 3.1
- 6.5 Medium
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H - CVSS 3.1
- 7.5 High
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H - Weakness
- CWE-416
- Updated
- 2026-11-02
Affected products
History
| Recorded | Changed | Sources |
|---|---|---|
| first indexed | CVE List, EUVD, GitHub Advisories, NVD |
Dates are when Every CVE recorded each change. Upstream dates may differ.
In short
CVE-2025-3631 is a medium vulnerability (CVSS 6.5) in Ibm Mq, published July 11, 2025. No source lists public exploit code. EPSS puts the chance of exploitation in the next 30 days at 0.38%, the 32nd percentile. No source names a fixed version.