Riskcovery

CVE-2026-12343

IBM MQ Denial of Service

State
Published
Severity
6.5 Medium
Published
Oct 19, 2026
Updated
Oct 19, 2026
Reserved
Jun 15, 2026

Read the record on cve.org

Description

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.

Scores

CVSSScoreVectorSource
3.16.5 MediumCVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:Hibm

Weaknesses

  • CWE-400 Uncontrolled Resource Consumption

Affected Products

ProductVersions
MQ OperatorIBM
  • 3.2.0 through 3.2.29Affected
  • 3.3.0 to before 3.4.0Affected
  • 3.4.1Affected
  • 3.5.0Affected
  • 3.5.1 through 3.5.3Affected
  • 3.6.0 through 3.6.4Affected
  • 3.7.0 through 3.7.2Affected
  • 3.8.0Affected
  • 3.8.1Affected
  • 3.9.0Affected
  • 3.9.1Affected
  • 3.9.2Affected
  • 4.0.0Affected
  • 4.0.1Affected
  • 4.0.2Affected
  • 4.0.3Affected
  • 4.0.4Affected
  • 2.0.0 through 2.0.29Affected
MQ Advanced container imagesIBM
  • 9.4.0.6-r1 through r1, 9.4.0.6-r2, 9.4.0.7-r1, 9.4.0.10-r1, 9.4.0.10-r2, 9.4.0.11-r1, 9.4.0.11-r2, 9.4.0.11-r3, 9.4.0.12-r1, 9.4.0.15-r1 - 9.4.0.15-r4, 9.4.0.16-r1, 9.4.0.16-r2, 9.4.0.17-r1, 9.4.0.17-r2, 9.4.0.20-r1, 9.4.0.21-r1, 9.4.0.21-r2, 9.4.0.25-r1 - 9.4.0.25-r3, 9.4.0.26-r1CD: 9.4.1.0-r1, 9.4.1.0-r2, 9.4.1.1-r1, 9.4.2.0-r1, 9.4.2.0-r2, 9.4.2.1-r1, 9.4.2.1-r2, 9.4.3.0-r1, 9.4.3.0-r2, 9.4.3.1-r1 - 9.4.3.1-r3, 9.4.4.0-r1 - 9.4.4.0-r4, 9.4.4.1-r1, 9.4.5.0-r1, 9.4.5.0-r2, 9.4.5.1-r1, 10.0.0.0-r1 - 10.0.0.0-r4, 10.0.0.5-r1LTS: 9.3.0.0-r1, 9.3.0.0-r2, 9.3.0.0-r3, 9.3.0.1-r1, 9.3.0.1-r2, 9.3.0.1-r3, 9.3.0.1-r4, 9.3.0.3-r1, 9.3.0.4-r1, 9.3.0.4-r2, 9.3.0.5-r1, 9.3.0.5-r2, 9.3.0.5-r3, 9.3.0.6-r1, 9.3.0.10-r1, 9.3.0.10-r2, 9.3.0.11-r1,9.3.0.11-r2, 9.3.0.15-r1, 9.3.0.16-r1, 9.3.0.16-r2, 9.3.0.17-r1, 9.3.0.17-r2, 9.3.0.17-r3, 9.3.0.20-r1, 9.3.0.20-r2, 9.3.0.21-r1, 9.3.0.21-r2, 9.3.0.21-r3, 9.3.0.25-r1, 9.4.0.0-r1, 9.4.0.0-r2, 9.4.0.0-r3, 9.4.0.5-r1, 9.4.0.5-r2Affected
  • 9.4.0.6-r2Affected
  • 9.4.0.7-r1Affected
  • 9.4.0.10-r1Affected
  • 9.4.0.10-r2Affected
  • 9.4.0.11-r1Affected
  • 9.4.0.11-r2Affected
  • 9.4.0.11-r3Affected
  • 9.4.0.12-r1Affected
  • 9.4.0.15-r1 through 9.4.0.15-r4Affected
  • 9.4.0.16-r1Affected
  • 9.4.0.16-r2Affected
  • 9.4.0.17-r1Affected
  • 9.4.0.17-r2Affected
  • 9.4.0.20-r1Affected
  • 9.4.0.21-r1Affected
  • 9.4.0.21-r2Affected
  • 9.4.0.25-r1 through 9.4.0.25-r3Affected
  • 9.4.0.26-r1Affected
  • 9.4.1.0-r1Affected
  • 9.4.1.0-r2Affected
  • 9.4.1.1-r1Affected
  • 9.4.2.0-r1Affected
  • 9.4.2.0-r2Affected
  • 9.4.2.1-r1Affected
  • and 46 more versions

References

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