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CVE-2026-12343

6.5 medium SSVC exploitation: none Analyzed
NVD · CVE.org

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.

Fix

Patch, vendor advisory and mitigation references on NVD 1

Every line above is quoted from NVD, CISA, Microsoft, the vendor's own advisory or DISA; nothing is generated.

Change history 5

  1. Cpes+109 CPE criteria (now 109)NVD modified 2026-10-23 17:27
  2. StatusPublished → AnalyzedNVD modified 2026-10-23 17:27
  3. StatusAwaiting Analysis → PublishedNVD modified 2026-10-19 17:52
  4. StatusReceived → Awaiting AnalysisNVD modified 2026-10-19 20:55
  5. First seenCVSS 6.5NVD modified 2026-10-19 18:17

Affected (CPE criteria) 109

  • cpe:2.3:a:ibm:mq_operator:*:*:*:*:lts:*:*:*
  • cpe:2.3:a:ibm:mq_operator:*:*:*:*:sc2:*:*:*
  • cpe:2.3:a:ibm:mq_operator:3.3.0:*:*:*:cd:*:*:*
  • cpe:2.3:a:ibm:mq_operator:3.4.0:*:*:*:cd:*:*:*
  • cpe:2.3:a:ibm:mq_operator:3.4.1:*:*:*:cd:*:*:*
  • cpe:2.3:a:ibm:mq_operator:3.5.0:*:*:*:cd:*:*:*
  • cpe:2.3:a:ibm:mq_operator:3.5.1:*:*:*:cd:*:*:*
  • cpe:2.3:a:ibm:mq_operator:3.5.2:*:*:*:cd:*:*:*
  • cpe:2.3:a:ibm:mq_operator:3.5.3:*:*:*:cd:*:*:*
  • cpe:2.3:a:ibm:mq_operator:3.6.0:*:*:*:cd:*:*:*
  • cpe:2.3:a:ibm:mq_operator:3.6.1:*:*:*:cd:*:*:*
  • cpe:2.3:a:ibm:mq_operator:3.6.2:*:*:*:cd:*:*:*
  • cpe:2.3:a:ibm:mq_operator:3.6.3:*:*:*:cd:*:*:*
  • cpe:2.3:a:ibm:mq_operator:3.6.4:*:*:*:cd:*:*:*
  • cpe:2.3:a:ibm:mq_operator:3.7.0:*:*:*:cd:*:*:*
  • cpe:2.3:a:ibm:mq_operator:3.7.1:*:*:*:cd:*:*:*
  • cpe:2.3:a:ibm:mq_operator:3.7.2:*:*:*:cd:*:*:*
  • cpe:2.3:a:ibm:mq_operator:3.8.0:*:*:*:cd:*:*:*
  • cpe:2.3:a:ibm:mq_operator:3.8.1:*:*:*:cd:*:*:*
  • cpe:2.3:a:ibm:mq_operator:3.9.0:*:*:*:cd:*:*:*
  • cpe:2.3:a:ibm:mq_operator:3.9.1:*:*:*:cd:*:*:*
  • cpe:2.3:a:ibm:mq_operator:3.9.2:*:*:*:cd:*:*:*
  • cpe:2.3:a:ibm:mq_operator:4.0.0:*:*:*:cd:*:*:*
  • cpe:2.3:a:ibm:mq_operator:4.0.1:*:*:*:cd:*:*:*
  • cpe:2.3:a:ibm:mq_operator:4.0.2:*:*:*:cd:*:*:*
  • cpe:2.3:a:ibm:mq_operator:4.0.3:*:*:*:cd:*:*:*
  • cpe:2.3:a:ibm:mq_operator:4.0.4:*:*:*:cd:*:*:*
  • cpe:2.3:a:ibm:supplied_mq_advanced_container_images:9.4.1.0:r1:*:*:cd:*:*:*
  • cpe:2.3:a:ibm:supplied_mq_advanced_container_images:9.4.1.0:r2:*:*:cd:*:*:*
  • cpe:2.3:a:ibm:supplied_mq_advanced_container_images:9.4.1.1:r1:*:*:cd:*:*:*
  • cpe:2.3:a:ibm:supplied_mq_advanced_container_images:9.4.2.0:r1:*:*:cd:*:*:*
  • cpe:2.3:a:ibm:supplied_mq_advanced_container_images:9.4.2.0:r2:*:*:cd:*:*:*
  • cpe:2.3:a:ibm:supplied_mq_advanced_container_images:9.4.2.1:r1:*:*:cd:*:*:*
  • cpe:2.3:a:ibm:supplied_mq_advanced_container_images:9.4.2.1:r2:*:*:cd:*:*:*
  • cpe:2.3:a:ibm:supplied_mq_advanced_container_images:9.4.3.0:r1:*:*:cd:*:*:*
  • cpe:2.3:a:ibm:supplied_mq_advanced_container_images:9.4.3.0:r2:*:*:cd:*:*:*
  • cpe:2.3:a:ibm:supplied_mq_advanced_container_images:9.4.3.1:r1:*:*:cd:*:*:*
  • cpe:2.3:a:ibm:supplied_mq_advanced_container_images:9.4.3.1:r2:*:*:cd:*:*:*
  • cpe:2.3:a:ibm:supplied_mq_advanced_container_images:9.4.3.1:r3:*:*:cd:*:*:*
  • cpe:2.3:a:ibm:supplied_mq_advanced_container_images:9.4.4.0:r1:*:*:cd:*:*:*
  • and 69 more

References 1