CVE-2026-12728
Received Received - Intake

IBM MQ Deserialization Flaw Enables Code Execution

Publication date: 2026-09-15

Last updated on: 2026-09-15

Assigner: IBM Corporation

Description
IBM MQ 9.1.0.0 through 9.1.0.37 LTS, 9.2.0.0 through 9.2.0.43 LTS, 9.3.0.0 through 9.3.0.41 LTS, 9.3.0.0 through 9.3.5.1 CD, 9.4.0.0 through 9.4.0.25 LTS, 9.4.0.0 through 9.4.5.1 CD, and 10.0.0.0 could allow an authenticated attacker to execute arbitrary code due to a deserialization of untrusted data.

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Meta Information

Published
2026-09-15
Last Modified
2026-09-15
Generated
2026-09-15
AI Q&A
2026-09-15
EPSS Evaluated
N/A
NVD
CVE-2026-12728
EUVD
EUVD-2026-78871

Affected Vendors & Products

Showing 7 associated CPEs
Vendor Product Version / Range
ibm mq From 9.1.0.0 (inc) to 9.1.0.37 (inc)
ibm mq From 9.2.0.0 (inc) to 9.2.0.43 (inc)
ibm mq From 9.3.0.0 (inc) to 9.3.0.41 (inc)
ibm mq From 9.3.0.0 (inc) to 9.3.5.1 (inc)
ibm mq From 9.4.0.0 (inc) to 9.4.0.25 (inc)
ibm mq From 9.4.0.0 (inc) to 9.4.5.1 (inc)
ibm mq 10.0.0

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Exploitability

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CWE ID Description
CWE-UNKNOWN

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Executive Summary

This vulnerability in IBM MQ allows an authenticated attacker to execute arbitrary code remotely by exploiting a deserialization filter bypass in the Java messaging component. The flaw occurs when specially crafted serialized messages bypass the configured deserialization allowlist, enabling code execution on affected systems.

Impact Analysis

An attacker could gain control of your IBM MQ server, leading to unauthorized access, data theft, or disruption of messaging services. Since IBM MQ is often used for critical business communications, this could impact operations, compromise sensitive data, and allow further network infiltration.

Compliance Impact

This vulnerability could lead to unauthorized access or data breaches, violating GDPR's data protection requirements or HIPAA's safeguards for protected health information. Non-compliance may result in legal penalties, fines, or reputational damage due to exposed sensitive data.

Mitigation Strategies

Apply the recommended updates or upgrades for your IBM MQ version to address the deserialization filter bypass. Upgrade to versions beyond the affected ranges (e.g., newer LTS or CD releases). No workarounds are provided, so patching is required.

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