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5.4 Medium

CVE-2026-12550 IBM MQ is affected by a denial of service vulnerability

Description

IBM MQ 9.2.0.0 through 9.2.0.44 LTS, 9.3.0.0 through 9.3.0.42 LTS, 9.4.0.0 through 9.4.0.26 LTS, 9.4.0.0 through 9.4.5.1 CD, and 10.0.0.0 through 10.0.0.5 LTS and CD could allow an authenticated attacker to obtain sensitive information or cause a denial of service due to improper validation of message selection parameters.

CVSS 3.1 detail

Vector CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:L/I:N/A:L

Exploitable remotely over the network, with an ordinary account and without any user action; the impact on data or service is limited.

Attack vector
Network
Attack complexity
Low
Privileges required
Low
Interaction
None
Scope
Unchanged
Confidentiality
Low
Integrity
None
Availability
Low

Affected products and versions

Product Affected versions Fixed in
MQ 10.0 10.0.0.0 → 10.0.0.5 No fix stated
MQ 9.4 9.4.0.0 → 9.4.5.1 No fix stated
MQ 9.3 9.3.0.0 → 9.3.0.42 No fix stated
MQ 9.2 9.2.0.0 → 9.2.0.44 No fix stated

Other CVEs of MQ

The 117 CVEs of MQ →
CVE-2026-10859 IBM MQ XMS .NET client is affected by an arbitrary code execution vulnerability 7.5 High CVE-2026-11376 IBM MQ is affected by a denial of service vulnerability 8.8 High CVE-2026-11724 IBM MQ Managed File Transfer is affected by an arbitrary code execution vulnerability 8.5 High CVE-2026-12356 IBM MQ Managed File Transfer is affected by an arbitrary code execution vulnerability 7.5 High
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