CVE-2026-11729
Received Received - Intake

IBM MQ Unsafe Deserialization Leading to JNDI Injection

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 in client applications due to unsafe deserialization that enables JNDI injection attacks.

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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-2026-11729
EUVD
EUVD-2026-78903

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

CWE
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KEV
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CWE ID Description
CWE-502 The product deserializes untrusted data without sufficiently ensuring that the resulting data will be valid.

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Executive Summary

This vulnerability is a Java deserialization flaw in IBM MQ's Java client's internal command manager. It allows an authenticated attacker to execute arbitrary code in client applications through unsafe deserialization, enabling JNDI injection attacks.

Detection Guidance

To detect this vulnerability, check if your IBM MQ versions fall within the affected ranges (9.1.0.0-9.1.0.37, 9.2.0.0-9.2.0.43, 9.3.0.0-9.3.0.41, 9.3.0.0-9.3.5.1, 9.4.0.0-9.4.0.25, 9.4.0.0-9.4.5.1, or 10.0.0.0). Review Java client applications using IBM MQ for unsafe deserialization patterns or JNDI injection attempts in logs.

Impact Analysis

An attacker could exploit this to run malicious code on your systems, potentially leading to data breaches, system compromise, or disruption of services. Since it requires authentication, attackers need valid credentials but could escalate privileges once inside.

Compliance Impact

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

Mitigation Strategies

Apply the latest cumulative security updates immediately: upgrade IBM MQ to 9.1.0.38, 9.2.0.44, 9.3.0.42, 9.4.0.26, or 10.0.0.5 for CD versions. Ensure all Java client applications using IBM MQ are updated and disable JNDI lookups if not required.

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