Riskcovery

CVE-2026-11831

IBM MQ Heap-based Buffer Overflow

State
Published
Severity
5.4 Medium
Published
Oct 19, 2026
Updated
Oct 20, 2026
Reserved
Jun 9, 2026

Read the record on cve.org

Description

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.

Scores

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

Weaknesses

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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