What is CVE-2026-11726?

CVE-2026-11726 is a high-severity vulnerability in IBM Mq For HPE Nonstop, classified under Out-of-bounds Read. CVSS score: 8.1/10. Published 2026-09-18.

How severe is CVE-2026-11726?

High severity. CVSS v3 base score is 8.1 out of 10.

Out-of-bounds Read in IBM Mq For HPE Nonstop

CVE-2026-11726

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.

Vulnerability class: Buffer Overflow

CVSS v3 metric

CVSS v3 base score 8.1 (High). Vector: CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:H.

Affected products

Ibm Mq For Hpe Nonstop

Weakness classification (CWE)

CWE-125 — Out-of-bounds Read

References

psirt@us.ibm.com (vendor-advisory, patch)

Frequently asked questions

What is CVE-2026-11726?: CVE-2026-11726 is a high-severity vulnerability in IBM Mq For HPE Nonstop, classified under Out-of-bounds Read. CVSS score: 8.1/10. Published 2026-09-18.
How severe is CVE-2026-11726?: High severity. CVSS v3 base score is 8.1 out of 10.