CVE-2026-10859 is a vulnerability in IBM Mq
Published on November 4, 2026
IBM MQ XMS .NET client is affected by an arbitrary code execution vulnerability
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 execute arbitrary code on consumer applications due to insecure deserialization of ObjectMessage payloads.
Vulnerability Analysis
CVE-2026-10859 can be exploited with network access, and requires small amount of user privileges. This vulnerability is consided to have a high level of attack complexity. The potential impact of an exploit of this vulnerability is considered to be very high.
Products Associated with CVE-2026-10859
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Affected Versions
IBM MQ:- Version 9.2.0.0, <= 9.2.0.44 is affected.
- Version 9.3.0.0, <= 9.3.0.42 is affected.
- Version 9.4.0.0, <= 9.4.0.26 is affected.
- Version 9.4.0.0, <= 9.4.5.1 is affected.
- Version 10.0.0.0, <= 10.0.0.5 is affected.