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Multiple High-Risk Vulnerabilities Discovered in IBM MQ

Multiple High-Risk Vulnerabilities Discovered in IBM MQ

First seen 5 Nov 2026, 02:49 UTC • •
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ThreatCluster AI
ThreatCluster •November 5, 2026 at 08:19 UTC
  • •Six high-risk vulnerabilities in IBM MQ require immediate attention.
  • •Affected versions span from 9.2.0.0 to 10.0.0.5 across various IBM MQ deployments.
  • •Patching is essential as no active exploitation has been confirmed yet.

IBM MQ has reported several high-risk vulnerabilities, including CVE-2026-12356, CVE-2026-13271, CVE-2026-13289, CVE-2026-13292, CVE-2026-11724, and CVE-2026-13284, all published on November 4, 2026. These vulnerabilities could allow authenticated attackers to execute arbitrary code, obtain sensitive information, or cause denial of service through improper handling of XML external entity references and command queue processing. Affected versions include IBM MQ 9.2.0.0 to 10.0.0.5. The vulnerabilities are particularly concerning for organizations with internet-accessible managed file-transfer services. No proof-of-concept code or active exploitation has been confirmed, but urgent patching is recommended. IBM has released fixes for these issues, and organizations are advised to apply them promptly to mitigate risks.

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Timeline

2026-11-04
Multiple CVEs published
IBM disclosed several high-risk vulnerabilities in IBM MQ, including CVE-2026-12356 and CVE-2026-13271.
Redpacketsecurity
2026-11-04
Patches released
IBM released security updates for all affected versions of IBM MQ to address the vulnerabilities.
IBM
2026-11-04
CVE-2026-12356 published
Vulnerability assigned a CVE identifier and published in the National Vulnerability Database.
MITRE
2026-11-04
CVE-2026-13284 published
Vulnerability assigned a CVE identifier and published in the National Vulnerability Database.
MITRE
2026-11-04
CVE-2026-13292 published
Vulnerability assigned a CVE identifier and published in the National Vulnerability Database.
MITRE
2026-11-04
CVE-2026-11724 published
Vulnerability assigned a CVE identifier and published in the National Vulnerability Database.
MITRE
2026-11-04
CVE-2026-13271 published
Vulnerability assigned a CVE identifier and published in the National Vulnerability Database.
MITRE
2026-11-04
CVE-2026-13289 published
Vulnerability assigned a CVE identifier and published in the National Vulnerability Database.
MITRE

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Extracted Entities (13)

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Common questions

Which versions of IBM MQ are affected?
IBM MQ versions 9.2.0.0 through 10.0.0.5 are affected by the vulnerabilities.
What actions should organizations take?
Organizations should apply the latest security patches released by IBM for their respective versions of IBM MQ.
Is there any evidence of active exploitation?
No, there is currently no confirmed active exploitation of these vulnerabilities.