CVE-2026-11726 IBM MQ for HPE NonStop - Information Disclosure & Denial of Service

IBM MQ for HPE NonStop 8.1.0 through 8.1.0.40 contains an information disclosure and denial of service vulnerability caused by improper validation of message header offset values, letting authenticated attackers obtain sensitive information or cause service disruption.

CVSS base score 8.1 /10
High
CISA KEV
Not listed
Public exploit
None known
Authentication
Required
EPSS
0.33% chance of exploitation in 30 days
View the NVD record ↗

Details

Type
Information Disclosure
Impact
Information Disclosure, Denial Of Service
CVSS vector
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:H
Published
18 September 2026
Updated
15 October 2026
Weakness
CWE-125

Vendor fix

Update to the latest available version beyond 8.1.0.40.

Patching closes this CVE. It does not tell you which of your systems run the affected version, or what else is exposed alongside them.

References

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