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6.5 Medium

CVE-2019-4656 IBM MQ and IBM MQ Appliance 7.1, 7.5, 8.0, 9.0 LTS, 9.1 LTS, and 9.1 CD is vulnerable to a denial of service attack that…

Description

IBM MQ and IBM MQ Appliance 7.1, 7.5, 8.0, 9.0 LTS, 9.1 LTS, and 9.1 CD is vulnerable to a denial of service attack that would allow an authenticated user to crash the queue and require a restart due to an error processing error messages. IBM X-Force ID: 170967.

Affected products and versions

Product Affected versions Fixed in
MQ 9.1 9.1 → 9.1.3 No fix stated
MQ 9.0 9.0.0.0 → 9.0.0.8 No fix stated
MQ 8.0 8.0.0.0 → 8.0.0.13 No fix stated
MQ 7.5 7.5.0.0 → 7.5.0.9 No fix stated
MQ 7.1 7.1.0.0 → 7.1.0.9 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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