CVE-2026-12670
Received Received - Intake

Denial of Service in IBM MQ via Memory Exhaustion

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 denial of service through a specially crafted message that triggers excessive memory operations during character set conversion.

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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-2026-12670
EUVD
EUVD-2026-104462

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-681 When converting from one data type to another, such as long to integer, data can be omitted or translated in a way that produces unexpected values. If the resulting values are used in a sensitive context, then dangerous behaviors may occur.

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Executive Summary

This vulnerability in IBM MQ allows an authenticated attacker to cause a denial of service by sending a specially crafted message. The message triggers excessive memory operations during character set conversion, potentially consuming system resources and disrupting service.

Impact Analysis

An attacker could exploit this to degrade or completely disrupt IBM MQ services, leading to downtime for message processing. This may affect applications relying on IBM MQ for communication, causing delays or failures in message delivery.

Mitigation Strategies

Apply the latest IBM MQ security patches or updates as soon as they become available to address the denial of service vulnerability caused by excessive memory operations during character set conversion.

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