CVE-2026-11726: IBM Mq For HPE Nonstop

High severity, CVSS 8.1. EPSS: 0.3% chance of exploitation in the next 30 days.

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.

Affected products

• IBM Mq For HPE Nonstop: from 8.1.0, up to and including 8.1.0.40

Published 2026-09-18. Last modified 2026-09-22.