CVE-2020-4267: IBM Mq

Medium severity, CVSS 6.5. EPSS: 1.3% chance of exploitation in the next 30 days.

IBM MQ and MQ Appliance 8.0, 9.1 LTS, and 9.1 CD could allow an authenticated user cause a denial of service due to a memory leak. IBM X-Force ID: 175840.

Affected products

• IBM Mq: from 8.0.0.0, before 8.0.0.14 (fixed in 8.0.0.14); from 9.1.0.0, before 9.1.0.4 (fixed in 9.1.0.4)
• IBM Mq Appliance: from 9.1.0, before 9.1.5 (fixed in 9.1.5)

Published 2020-04-24. Last modified 2026-06-17.