CVE-2019-4560: IBM Mq Appliance

Medium severity, CVSS 6.5. EPSS: 1.1% chance of exploitation in the next 30 days.

IBM MQ and IBM MQ Appliance 9.1 CD, 9.1 LTS, 9.0 LTS, and 8.0 is vulnerable to a denial of service attack caused by channels processing poorly formatted messages. IBM X-Force ID: 166357.

Affected products

• IBM Mq Appliance: from 8.0.0.0, before 8.0.0.13 (fixed in 8.0.0.13); from 9.0.0.0, before 9.0.0.8 (fixed in 9.0.0.8); from 9.1.0.0, before 9.1.0.4 (fixed in 9.1.0.4); from 9.1.1, before 9.1.4 (fixed in 9.1.4)

Published 2019-12-16. Last modified 2026-06-17.