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Vulnerability · Published Sep 18, 2026 · Assigned by ibm

CVE-2026-11375IBM MQ queue manager is vulnerable to remote code execution

High 8.8

In plain English

A high-severity heap buffer overflow in MQ from IBM. There are no confirmed reports of exploitation so far. The chance it is exploited in the next 30 days is estimated at 0.6% (higher than 49% of all known vulnerabilities).

Severity (CVSS 3.1)8.8High
Exploit odds (30 days)0.6%top 50.7% of all CVEs
Exploited in the wildNo reportsCISA SSVC: none
Attack toolingNoneno public tooling known

Official description

IBM MQ could allow an authenticated attacker to cause a denial of service or potentially execute arbitrary code due to a stack buffer overflow when processing XA transaction identifiers.

Affected products (as reported)

VendorProductVersions
IBM MQ 9.1.0.0 – through 9.1.0.37 LTS9.2.0.0 – through 9.2.0.43 LTS9.3.0.0 – through 9.3.0.41 LTS9.3.0.0 – through 9.3.5.1 CD9.4.0.0 – through 9.4.0.25 LTS9.4.0.0 – through 9.4.5.1 CD10.0.0.0

Weakness: CWE-122 · Vector: CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H

References