CVE-2026-11831
Received Received - Intake

IBM MQ Out-of-Bounds Read Vulnerability

Publication date: 2026-10-19

Last updated on: 2026-10-19

Assigner: IBM Corporation

Description
IBM MQ could allow an authenticated attacker to cause a limited denial of service and obtain very limited information about process memory layout due to an out-of-bounds read when processing a specially crafted client request.

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Meta Information

Published
2026-10-19
Last Modified
2026-10-19
Generated
2026-10-19
AI Q&A
2026-10-19
EPSS Evaluated
N/A
NVD
CVE-2026-11831
EUVD
EUVD-2026-104471

Affected Vendors & Products

Showing 89 associated CPEs
Vendor Product Version / Range
IBM MQ Operator 3.2.0
IBM MQ Operator 3.3.0
IBM MQ Operator 3.4.1
IBM MQ Operator 3.5.0
IBM MQ Operator 3.5.1
IBM MQ Operator 3.6.0
IBM MQ Operator 3.7.0
IBM MQ Operator 3.8.0
IBM MQ Operator 3.8.1
IBM MQ Operator 3.9.0
IBM MQ Operator 3.9.1
IBM MQ Operator 3.9.2
IBM MQ Operator 4.0.0
IBM MQ Operator 4.0.1
IBM MQ Operator 4.0.2
IBM MQ Operator 4.0.3
IBM MQ Operator 4.0.4
IBM MQ Operator 2.0.0
IBM MQ Advanced container images 9.4.0.6-r1
IBM MQ Advanced container images 9.4.0.6-r2
IBM MQ Advanced container images 9.4.0.7-r1
IBM MQ Advanced container images 9.4.0.10-r1
IBM MQ Advanced container images 9.4.0.10-r2
IBM MQ Advanced container images 9.4.0.11-r1
IBM MQ Advanced container images 9.4.0.11-r2
IBM MQ Advanced container images 9.4.0.11-r3
IBM MQ Advanced container images 9.4.0.12-r1
IBM MQ Advanced container images 9.4.0.15-r1
IBM MQ Advanced container images 9.4.0.16-r1
IBM MQ Advanced container images 9.4.0.16-r2
IBM MQ Advanced container images 9.4.0.17-r1
IBM MQ Advanced container images 9.4.0.17-r2
IBM MQ Advanced container images 9.4.0.20-r1
IBM MQ Advanced container images 9.4.0.21-r1
IBM MQ Advanced container images 9.4.0.21-r2
IBM MQ Advanced container images 9.4.0.25-r1
IBM MQ Advanced container images 9.4.0.26-r1
IBM MQ Advanced container images 9.4.1.0-r1
IBM MQ Advanced container images 9.4.1.0-r2
IBM MQ Advanced container images 9.4.1.1-r1
IBM MQ Advanced container images 9.4.2.0-r1
IBM MQ Advanced container images 9.4.2.0-r2
IBM MQ Advanced container images 9.4.2.1-r1
IBM MQ Advanced container images 9.4.2.1-r2
IBM MQ Advanced container images 9.4.3.0-r1
IBM MQ Advanced container images 9.4.3.0-r2
IBM MQ Advanced container images 9.4.3.1-r1
IBM MQ Advanced container images 9.4.4.0-r1
IBM MQ Advanced container images 9.4.4.1-r1
IBM MQ Advanced container images 9.4.5.0-r1
IBM MQ Advanced container images 9.4.5.0-r2
IBM MQ Advanced container images 9.4.5.1-r1
IBM MQ Advanced container images 10.0.0.0-r1
IBM MQ Advanced container images 10.0.0.5-r1
IBM MQ Advanced container images 9.3.0.0-r1
IBM MQ Advanced container images 9.3.0.0-r2
IBM MQ Advanced container images 9.3.0.0-r3
IBM MQ Advanced container images 9.3.0.1-r1
IBM MQ Advanced container images 9.3.0.1-r2
IBM MQ Advanced container images 9.3.0.1-r3
IBM MQ Advanced container images 9.3.0.1-r4
IBM MQ Advanced container images 9.3.0.3-r1
IBM MQ Advanced container images 9.3.0.4-r1
IBM MQ Advanced container images 9.3.0.4-r2
IBM MQ Advanced container images 9.3.0.5-r1
IBM MQ Advanced container images 9.3.0.5-r2
IBM MQ Advanced container images 9.3.0.5-r3
IBM MQ Advanced container images 9.3.0.6-r1
IBM MQ Advanced container images 9.3.0.10-r1
IBM MQ Advanced container images 9.3.0.10-r2
IBM MQ Advanced container images 9.3.0.11-r1
IBM MQ Advanced container images 9.3.0.11-r2
IBM MQ Advanced container images 9.3.0.15-r1
IBM MQ Advanced container images 9.3.0.16-r1
IBM MQ Advanced container images 9.3.0.16-r2
IBM MQ Advanced container images 9.3.0.17-r1
IBM MQ Advanced container images 9.3.0.17-r2
IBM MQ Advanced container images 9.3.0.17-r3
IBM MQ Advanced container images 9.3.0.20-r1
IBM MQ Advanced container images 9.3.0.20-r2
IBM MQ Advanced container images 9.3.0.21-r1
IBM MQ Advanced container images 9.3.0.21-r2
IBM MQ Advanced container images 9.3.0.21-r3
IBM MQ Advanced container images 9.3.0.25-r1
IBM MQ Advanced container images 9.4.0.0-r1
IBM MQ Advanced container images 9.4.0.0-r2
IBM MQ Advanced container images 9.4.0.0-r3
IBM MQ Advanced container images 9.4.0.5-r1
IBM MQ Advanced container images 9.4.0.5-r2

Helpful Resources

Exploitability

CWE
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KEV
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CWE ID Description
CWE-122 A heap overflow condition is a buffer overflow, where the buffer that can be overwritten is allocated in the heap portion of memory, generally meaning that the buffer was allocated using a routine such as malloc().

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Executive Summary

IBM MQ has an out-of-bounds read vulnerability where an authenticated attacker can send a specially crafted client request. This causes a limited denial of service and allows very limited access to process memory layout information.

Impact Analysis

An attacker could disrupt IBM MQ services temporarily and gain minimal insight into memory layout, which might aid further exploitation. However, the impact is limited and does not allow full system compromise.

Compliance Impact

This vulnerability may pose compliance risks by potentially exposing limited memory information, which could violate data protection requirements under GDPR or HIPAA if sensitive data is involved. Organizations should assess impact based on their environment.

Mitigation Strategies

Apply the latest IBM MQ security patches or updates as soon as they become available to address the out-of-bounds read vulnerability.

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