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IBMCVE-2026-10575

IBM MQ: denial of service

High8.8CVE-2026-10575 · Published Sep 18, 2026 · updated Sep 23, 2026

IBM MQ could allow an authenticated attacker to cause a denial of service or potentially escalate privileges due to a heap buffer overflow when processing MQPUT operations with malformed distribution headers.

IBM advisory

Affected versions

PackageAffectedFixed in
MQ
Product
>= 9.1.0.0, <= 9.1.0.37 LTSNo fix yet
>= 9.2.0.0, <= 9.2.0.43 LTSNo fix yet
>= 9.3.0.0, <= 9.3.0.41 LTSNo fix yet
>= 9.3.0.0, <= 9.3.5.1 CDNo fix yet
Details and references
CVSS 3.1
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
Severity from
the vendor (its own CVE record or advisory)
Weakness
CWE-122

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