CVE-2026-11728
IBM MQ .NET client is vulnerable to remote code execution
CVSS Score
8.1
EPSS Score
0.0%
EPSS Percentile
0th
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.
| CWE | CWE-787 |
| Vendor | ibm |
| Product | mq |
| Published | Sep 15, 2026 |
| Last Updated | Sep 15, 2026 |
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CVSS v3 Breakdown
CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:H Attack Vector
Network
Attack Complexity
High
Privileges Required
None
User Interaction
None
Scope
Unchanged
Confidentiality
High
Integrity
High
Availability
High
Affected Versions
IBM / MQ
9.1.0.0 ≤ 9.1.0.37 LTS 9.2.0.0 ≤ 9.2.0.43 LTS 9.3.0.0 ≤ 9.3.0.41 LTS 9.3.0.0 ≤ 9.3.5.1 CD 9.4.0.0 ≤ 9.4.0.25 LTS 9.4.0.0 ≤ 9.4.5.1 CD 10.0.0.0