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Vulnerabilities

Vulnerability · 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.

Published Jul 11, 2025 · catalog updated Aug 18, 2025 · IBM MQ Appliance

Check this week

CVE-2025-3631 is not in CISA KEV. FIRST estimates a 38.00% chance of exploitation in the next 30 days. Check whether you run IBM MQ Appliance.

Gaps on this record

  • No vendor fix or required action is stored. Compare the linked advisory before you change production.
Severity
Medium6.5
Known exploitation
Not in CISA/VulnCheck KEV
EPSS
38.00%
Remediation
Vendor / distro source
Affected products
vendor IBM MQ Appliance 9.3.2.0 CD ≤9.3.5.2 CD

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.

Are you affected?

Enter the version you run. The result uses only the ranges stored on this record.

The check returns affected, not affected, or incomplete. It does not guess a version that is missing from the record.

  • vendor IBM MQ Appliance 9.3.2.0 CD ≤9.3.5.2 CD9.3.2.0 CD ≤9.3.5.2 CD

How to fix CVE-2025-3631

What to do

Three questions, each answered from this record only. Confirm the vendor advisory before you patch.

Should you patch?

CVE-2025-3631 is not in CISA KEV. FIRST estimates a 38.00% chance of exploitation in the next 30 days. Check whether you run IBM MQ Appliance.

Which versions are affected?

Compare what you have installed with IBM MQ Appliance 9.3.2.0 CD ≤9.3.5.2 CD 9.3.2.0 CD ≤9.3.5.2 CD. Compare the installed version with the linked vendor advisory before you change production.

What should an analyst verify?

No weakness class is stored. EPSS 38.00%. There is no CISA KEV listing. No Exploit-DB or Metasploit reference is linked. Use the source links for the original advisory.

Code

The project this record applies to. Exploit listings stay in References.

No public source repository is identified for this product.

Timeline

Detection, updates, and resolution for this record.

  1. Jul 11, 2025 · EUVD

    Detected

    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.

  2. Aug 18, 2025 · EUVD

    Updated

    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.

Sources

  • CVE.orgVulnerability recordCVE-2025-3631

    Official CVE identifier

    cve.org
  • EUVDVulnerability recordEUVD-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.

    euvd.enisa.europa.eu

References

Freshness

Last verified in this catalog Aug 18, 2025. Significant claims (KEV, EPSS, CVSS, affected ranges) come from the source rows above — open the original publisher for the authoritative advisory.