IBM MQ Buffer Overflow via Malformed Compressed Channels - Remote Code Exec
CVE-2026-10027 Published on September 18, 2026

IBM MQ queue manager is vulnerable to unauthenticated remote code execution
IBM MQ could allow a remote attacker to cause a denial of service or execute arbitrary code due to a buffer overflow when processing malformed compressed data on channels configured with compression enabled.

Vendor Advisory NVD

Vulnerability Analysis

CVE-2026-10027 can be exploited with network access, and does not require authorization privileges or user interaction. This vulnerability is consided to have a high level of attack complexity. The potential impact of an exploit of this vulnerability is considered to be very high.

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

Weakness Type

What is a Memory Corruption Vulnerability?

The software writes data past the end, or before the beginning, of the intended buffer. Typically, this can result in corruption of data, a crash, or code execution. The software may modify an index or perform pointer arithmetic that references a memory location that is outside of the boundaries of the buffer. A subsequent write operation then produces undefined or unexpected results.

CVE-2026-10027 has been classified to as a Memory Corruption vulnerability or weakness.


Products Associated with CVE-2026-10027

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IBM Mq
 

Affected Versions

IBM MQ: