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 a remote attacker to cause a denial of service or potentially execute arbitrary code in the client due to a heap buffer overflow when receiving messages from a malicious queue manager or through a man-in-the-middle attack.
Published: 2026-09-15
Score: 8.1 High
EPSS: n/a
KEV: No
Impact: n/a
Action: n/a
AI Analysis

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Remediation

Vendor Solution

This issue was addressed under Known Issue DT473417 IBM MQ version 9.1 LTS Apply cumulative security update 9.1.0.38 IBM MQ version 9.2 LTS Apply cumulative security update 9.2.0.44 IBM MQ version 9.3 LTS Apply cumulative security update 9.3.0.42 IBM MQ version 9.4 LTS Apply cumulative security update 9.4.0.26 IBM MQ version 9.3 CD, 9.4 CD and 10.0.0.0 Upgrade to IBM MQ version 10.0.0.5

Tracking

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Advisories

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History

Tue, 15 Sep 2026 19:30:00 +0000

Type Values Removed Values Added
Metrics ssvc

{'options': {'Automatable': 'no', 'Exploitation': 'none', 'Technical Impact': 'total'}, 'version': '2.0.3'}

Tue, 15 Sep 2026 18:00:00 +0000

Type Values Removed Values Added
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 a remote attacker to cause a denial of service or potentially execute arbitrary code in the client due to a heap buffer overflow when receiving messages from a malicious queue manager or through a man-in-the-middle attack.
Title IBM MQ .NET client is vulnerable to remote code execution
First Time appeared Ibm
Ibm mq
Weaknesses CWE-787
CPEs cpe:2.3:a:ibm:mq:10.0.0.0:*:*:*:*:*:*:*
cpe: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:*:*:*:*:*:*:*
cpe:2.3:a:ibm:mq:9.3.5.1:*:*:*:*:*:*:*
cpe:2.3:a:ibm:mq:9.4.0.0:*:*:*:*:*:*:*
cpe:2.3:a:ibm:mq:9.4.0.25:*:*:*:*:*:*:*
cpe:2.3:a:ibm:mq:9.4.5.1:*:*:*:*:*:*:*
Vendors & Products Ibm
Ibm mq
References
Metrics cvssV3_1

{'score': 8.1, 'vector': 'CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:H'}

Subscriptions

Ibm Mq
cve-icon MITRE

Status: PUBLISHED

Assigner: ibm

Published:

Updated: 2026-09-15T18:33:56.615Z

Reserved: 2026-06-09T02:32:45.930Z

Link: CVE-2026-11728

cve-icon Vulnrichment

Updated: 2026-09-15T18:33:52.118Z

cve-icon NVD

Status : Received

Published: 2026-09-15T18:17:12.257

Modified: 2026-09-15T19:17:15.233

Link: CVE-2026-11728

cve-icon Redhat

No data.

cve-icon OpenCVE Enrichment

Updated: 2026-09-15T20:00:07Z

Weaknesses