CVE-2025-3631IBM MQ denial of service
- 6.5MediumCVSS base score
- 0.39%Exploitation in 30 daysEPSS · top 67% of all CVEs
- NoKnown exploitednot in CISA's KEV catalog
- NonePublic exploitsnone known yet
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.
Timeline
ID reserved
By ibm
- 3 months later
· 3 months later
Published
- 38 days later
· 38 days later
Record updated
Changes after publication (a new score, a public exploit, EPSS crossing 1, 10 or 50 %, leaving KEV) are kept since November 2026; earlier ones are not known.
Scores
| Scored by | CVSS | Score | Vector |
|---|---|---|---|
| ibmCNA (assigner) | 3.1 | Medium6.5 | CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H |
| NVDNVD · Analyzed | 3.1 | High7.5 | CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H |
- EPSS (exploitation in 30 days)
- 0.39% · top 67% of all CVEs (14 Nov 2026)
- CISA SSVC
- Exploitation: none · Automatable: no · Technical impact: partial
The list uses the assigner's score when there is one, then CISA's, then NVD's: Medium 6.5.
Affected products
- affected 9.3.2.0 CD – ≤ 9.3.5.1 CD
- affected 9.4.0.0 – ≤ 9.4.2.1 CD
- affected 9.4.0.0 LTS – ≤ 9.4.0.11 LTS
- affected 9.3.2.0 CD – ≤ 9.3.5.2 CD
- affected 9.4.0.0 LTS – ≤ 9.4.0.11 LTS
- affected 9.4.1.0 CD – ≤ 9.4.2.1 CD
What to do
Solution: This issue was addressed under known issue DT435291 . IBM MQ version 9.4 LTS Apply fix pack 9.4.0.12 IBM MQ version 9.3 CD and 9.4 CD Upgrade to IBM MQ version 9.4.3 IBM MQ Appliance version 9.3 CD Upgrade to IBM MQ Appliance cumulative security update 9.4.0.12, or later firmware. IBM MQ Appliance version 9.4 LTS Apply IBM MQ Appliance cumulative security update 9.4.0.12, or later firmware. IBM MQ Appliance version 9.4 CD Apply IBM MQ Appliance cumulative security update 9.4.3.0, or later firmware.
References
References2
- https://www.ibm.com/support/pages/node/7238310 (opens in a new tab)vendor-advisorypatch
- https://www.ibm.com/support/pages/node/7237025 (opens in a new tab)vendor-advisorypatch
Sources
The same CVE in the primary databases and aggregators, to check against.
- CVE.org record (opens in a new tab)
- CVE List JSON (GitHub) (opens in a new tab)
- NVD (opens in a new tab)
- FIRST EPSS (opens in a new tab)
- EUVD EUVD-2025-21175 (opens in a new tab)
- OSV.dev (opens in a new tab)
- GitHub Advisories (opens in a new tab)
- CIRCL Vulnerability-Lookup (opens in a new tab)
Badge for a README or a ticket
[](https://cveledger.app/cve/CVE-2025-3631)Record last updated .