CVE-2019-4039: IBM WebSphere Mq

Medium severity, CVSS 5.5. EPSS: 0.3% chance of exploitation in the next 30 days.

IBM WebSphere MQ 8.0.0.0 through 8.0.0.9 and 9.0.0.0 through 9.1.1 could allow a local attacker to cause a denial of service within the error log reporting system. IBM X-Force ID: 156163.

Affected products

• IBM WebSphere Mq: from 8.0.0.0, up to and including 8.0.0.11; from 9.0.0.0, up to and including 9.0.0.5; from 9.1.0, up to and including 9.1.1; from 9.1.0.0, up to and including 9.1.0.1

Published 2019-05-23. Last modified 2026-06-17.