CVE-2026-14511

Analyzed Analyzed - Analysis Complete

IBM MQ Denial of Service via Malicious Message

Publication date: 2026-10-19

Last updated on: 2026-10-23

Assigner: IBM Corporation

Description

IBM MQ 9.4.5.0 through 9.4.5.1 could allow an authenticated user to cause a denial of service by sending a specially crafted message that crashes consuming applications.

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Meta Information

Published

2026-10-19

Last Modified

2026-10-23

Generated

2026-11-09

AI Q&A

2026-10-19

EPSS Evaluated

2026-11-07

NVD

CVE-2026-14511

EUVD

EUVD-2026-104477

Affected Vendors & Products

Vendor	Product	Version / Range
ibm	mq	9.4.5.0
ibm	mq	9.4.5.1

Helpful Resources

Exploitability

CWE

KEV

CWE ID	Description
CWE-770	The product allocates a reusable resource or group of resources on behalf of an actor without imposing any intended restrictions on the size or number of resources that can be allocated.

Attack-Flow Graph

Executive Summary

This vulnerability in IBM MQ 9.4.5.0 through 9.4.5.1 allows an authenticated user to send a specially crafted message that crashes applications consuming the message. This results in a denial of service as the affected applications become unavailable.

Detection Guidance

Detection involves monitoring for crashes in IBM MQ consuming applications after receiving crafted messages. Check application logs for unexpected terminations or errors related to message processing. Ensure IBM MQ versions 9.4.5.0 to 9.4.5.1 are identified and upgraded to 10.0.0.0.

Impact Analysis

If exploited, this vulnerability could disrupt services relying on IBM MQ by causing consuming applications to crash. This may lead to downtime, loss of data processing capabilities, and potential service interruptions for users dependent on the messaging system.

Compliance Impact

This vulnerability could impact compliance with GDPR and HIPAA by causing disruptions in data processing systems. A denial of service may lead to unauthorized access or loss of availability of personal or health data, violating GDPR's integrity and availability principles and HIPAA's access control requirements.

Mitigation Strategies

Update IBM MQ to a version beyond 9.4.5.1 to address the vulnerability. Monitor consuming applications for crashes after receiving messages. Restrict user permissions to reduce the risk of exploitation.

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