IBM MQ Authenticated DOS/ARCode via List Validation Defect
CVE-2026-11381 Published on September 18, 2026

IBM MQ for HPE NonStop is vulnerable to a denial of service issue
IBM MQ could allow an authenticated attacker to cause a denial of service or potentially execute arbitrary code due to improper validation of message distribution list structures.

Vendor Advisory NVD

Vulnerability Analysis

CVE-2026-11381 can be exploited with network access, and requires small amount of user privileges. This vulnerability is considered to have a low attack complexity. The potential impact of an exploit of this vulnerability is considered to be very high.

Attack Vector:
NETWORK
Attack Complexity:
LOW
Privileges Required:
LOW
User Interaction:
NONE
Scope:
UNCHANGED
Confidentiality Impact:
HIGH
Integrity Impact:
HIGH
Availability Impact:
HIGH

Weakness Type

Heap-based Buffer Overflow

A heap overflow condition is a buffer overflow, where the buffer that can be overwritten is allocated in the heap portion of memory, generally meaning that the buffer was allocated using a routine such as malloc().


Products Associated with CVE-2026-11381

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IBM Mq For Hpe Nonstop
 

Affected Versions

IBM MQ for HPE NonStop: