CVE-2026-12351: IBM Mq

Critical severity, CVSS 9.8. EPSS: 0.5% chance of exploitation in the next 30 days.

IBM MQ 9.3.0.0 through 9.3.0.41 LTS, 9.3.0.0 through 9.3.5.1 CD, 9.4.0.0 through 9.4.0.25 LTS, 9.4.0.0 through 9.4.5.1 LTS, and 10.0.0.0 could allow a remote attacker to execute arbitrary code due to unsafe JNDI lookup processing when the IVT application is deployed.

Affected products

• IBM Mq: from 9.3.0.0, up to and including 9.3.0.41 LTS; from 9.3.0.0, up to and including 9.3.5.1 CD; from 9.4.0.0, up to and including 9.4.0.25 LTS; from 9.4.0.0, up to and including 9.4.5.1 LTS; version 10.0.0.0 only

Published 2026-09-15. Last modified 2026-09-16.