CVE-2026-11729: CWE-502 Deserialization of Untrusted Data in IBM MQ
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.
AI Analysis
Technical Summary
This vulnerability (CWE-502) in IBM MQ arises from unsafe deserialization of untrusted data, allowing an authenticated attacker to perform JNDI injection attacks that result in arbitrary code execution within client applications. The affected versions include 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. The CVSS v3.1 score is 8.5, indicating high severity with network attack vector, high impact on confidentiality, integrity, and availability, and requiring low privileges but high attack complexity.
Potential Impact
An authenticated attacker with low privileges can exploit this vulnerability remotely to execute arbitrary code on client applications using IBM MQ. This can lead to full compromise of affected client systems, including complete loss of confidentiality, integrity, and availability of data and services.
Mitigation Recommendations
Patch status is not yet confirmed — check the vendor advisory for current remediation guidance. No official patch or fix links are provided in the available data. Until a patch is available, restrict access to IBM MQ clients to trusted users only and monitor for suspicious activity related to deserialization or JNDI usage. Follow IBM's official guidance once published.
CVE-2026-11729: CWE-502 Deserialization of Untrusted Data in IBM MQ
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.
CVSS v3.1
Score 8.5high
Affected software
IBM
MQ
pkg:maven/com.ibm.mq/mqcpe:2.3:a:ibm:mq:9.1.0.0:*:*:*:*:*:*:*cpe:2.3:a:ibm:mq:9.1.0.37:*:*:*:*:*:*:*cpe:2.3:a:ibm:mq:9.2.0.0:*:*:*:*:*:*:*cpe:2.3:a:ibm:mq:9.2.0.43:*:*:*:*:*:*:*cpe:2.3:a:ibm:mq:9.3.0.0:*:*:*:*:*:*:*cpe:2.3:a:ibm:mq:9.3.0.41:*:*:*:*:*:*:*Run on your own infrastructure? Check whether these packages are installed with threat-finder — our free open-source scanner.
Weaknesses
AI-Powered Analysis
Machine-generated threat intelligence
Technical Analysis
This vulnerability (CWE-502) in IBM MQ arises from unsafe deserialization of untrusted data, allowing an authenticated attacker to perform JNDI injection attacks that result in arbitrary code execution within client applications. The affected versions include 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. The CVSS v3.1 score is 8.5, indicating high severity with network attack vector, high impact on confidentiality, integrity, and availability, and requiring low privileges but high attack complexity.
Potential Impact
An authenticated attacker with low privileges can exploit this vulnerability remotely to execute arbitrary code on client applications using IBM MQ. This can lead to full compromise of affected client systems, including complete loss of confidentiality, integrity, and availability of data and services.
Mitigation Recommendations
Patch status is not yet confirmed — check the vendor advisory for current remediation guidance. No official patch or fix links are provided in the available data. Until a patch is available, restrict access to IBM MQ clients to trusted users only and monitor for suspicious activity related to deserialization or JNDI usage. Follow IBM's official guidance once published.
Technical Details
- Data Version
- 5.2
- Assigner Short Name
- ibm
- Date Reserved
- 2026-06-09T02:37:08.660Z
- Cvss Version
- 3.1
- State
- PUBLISHED
Threat ID: 6aa984eb55bf5e2cf52bbb42
Added to database: 09/15/2026, 17:48:27 UTC
Last enriched: 09/15/2026, 18:01:29 UTC
Last updated: 09/16/2026, 02:42:30 UTC
Views: 11
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