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Vulnerability · Published Nov 4, 2026 · Assigned by ibm

CVE-2026-12356IBM MQ Managed File Transfer is affected by an arbitrary code execution vulnerability

High 7.5

In plain English

A high-severity injection 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 0.3% (higher than 28% of all known vulnerabilities).

Severity (CVSS 3.1)7.5High
Exploit odds (30 days)0.3%top 72.1% of all CVEs
Exploited in the wildNo reportsnot in CISA KEV
Attack toolingNoneno public tooling known

Official description

IBM MQ 9.2.0.0 through 9.2.0.44 LTS, 9.3.0.0 through 9.3.0.42 LTS, 9.4.0.0 through 9.4.0.26 LTS, 9.4.0.0 through 9.4.5.1 CD, and 10.0.0.0 through 10.0.0.5 LTS and CD could allow an authenticated user with command queue access to execute arbitrary code by injecting malicious arguments into Ant script commands.

Affected products (as reported)

VendorProductVersions
IBM MQ 9.2.0.0 – through 9.2.0.449.3.0.0 – through 9.3.0.429.4.0.0 – through 9.4.0.269.4.0.0 – through 9.4.5.110.0.0.0 – through 10.0.0.5

Weakness: CWE-74 · Vector: CVSS:3.1/AV:N/AC:H/PR:L/UI:N/S:U/C:H/I:H/A:H

References