CVE-2026-11726 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 could allow an authenticated attacker to obtain sensitive information or cause a denial of service due to improper validation of message header offset values.

Metrics

CVSS 3.1

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

Attack Vector	Network	Scope	Unchanged
Attack Complexity	Low	Confidentiality Impact	High
Privileges Required	Low	Integrity Impact	None
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 8.1.0.40IT49920 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/7287707

Problem Types

CWE-125 Out-of-bounds Read CWE