CVE-2026-11831 json
IBM MQ Heap-based Buffer Overflow
published 2026-10-19 21 d ago modified 2026-10-23 16 d ago also EUVD-2026-104471
- cvss
- 5.4
- version 3.1, CNA
- cisa kev
- Not listed
- not in CISA's catalog
- epss
- 0.2%
- EPSS 0.2% chance of exploitation in 30 days, percentile 10%
- public exploits
- 0
- none known
Summary
IBM MQ could allow an authenticated attacker to cause a limited denial of service and obtain very limited information about process memory layout due to an out-of-bounds read when processing a specially crafted client request.
Patch / fix
CISA SSVC
- Exploitation
- none
- Automatable
- no
- Technical impact
- partial
- Assessed
- 20 d ago
Exploit prediction
0.20% chance of exploitation in the next 30 days, higher than 10% of all scored CVEs (FIRST EPSS, 2026-11-08).
CVSS scores
| assigned by | version | score | vector |
|---|---|---|---|
| CNA | 3.1 | 5.4 | CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:L/I:N/A:L |
Affected products
- IBM MQ Operator
- IBM MQ Advanced container images
Classification
- Weakness
-
- CWE-122 Heap-based Buffer Overflow
References
-
ibm.com
/support/pages/node/7292667
vendor-advisory, patch
Sources
- CVE List CVE-2026-11831
- NVD CVE-2026-11831
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