CVE-2026-11727 PUBLISHED

IBM MQ for HPE NonStop is vulnerable to a denial of service issue

Assigner: ibm
Reserved: 09.06.2026 Published: 18.09.2026 Updated: 18.09.2026

IBM MQ for HPE NonStop 8.1.0 through 8.1.0.40 IBM MQ C client could allow a remote attacker to cause a denial of service or potentially execute arbitrary code due to improper validation of queue manager responses when requesting AMS policy data.

Metrics

CVSS 3.1

CVSS Vector: CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:H
CVSS Score: 8.1

Attack Vector	Network	Scope	Unchanged
Attack Complexity	High	Confidentiality Impact	High
Privileges Required	None	Integrity Impact	High
User Interaction	None	Availability Impact	High

CVSS 3.1

Product Status

Vendor	IBM
Product	MQ for HPE NonStop
Versions	affected from 8.1.0 to 8.1.0.40 (incl.)

Solutions

IBM MQ V8.1 for HPE NonStop 8.1.0.40IT49921 Upgrade to CSU 8.1.0.41 https://www.ibm.com/support/fixcentral/swg/selectFixes

IBM strongly recommends addressing this vulnerability now by installing CSU 8.1.0.41.

References

https://www.ibm.com/support/pages/node/7287708

Problem Types

CWE-122 Heap-based Buffer Overflow CWE