CVE-2026-12343 json
IBM MQ Denial of Service
published 2026-10-19 21 d ago modified 2026-10-23 16 d ago also EUVD-2026-104468
- cvss
- 6.5
- 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 15%
- public exploits
- 0
- none known
Summary
IBM MQ could allow an authenticated attacker to cause a denial of service due to improper validation of RFH2 message header fields in queued publish/subscribe operations.
Patch / fix
CISA SSVC
- Exploitation
- none
- Automatable
- no
- Technical impact
- partial
- Assessed
- 20 d ago
Exploit prediction
0.24% chance of exploitation in the next 30 days, higher than 15% of all scored CVEs (FIRST EPSS, 2026-11-08).
CVSS scores
| assigned by | version | score | vector |
|---|---|---|---|
| CNA | 3.1 | 6.5 | CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H |
Affected products
- IBM MQ Operator
- IBM MQ Advanced container images
Classification
- Weakness
-
- CWE-400 Uncontrolled Resource Consumption
References
-
ibm.com
/support/pages/node/7292667
vendor-advisory, patch
Sources
- CVE List CVE-2026-12343
- NVD CVE-2026-12343
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