CVE-2018-1684: IBM WebSphere Mq

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

IBM WebSphere MQ 8.0 through 9.1 is vulnerable to a error with MQTT topic string publishing that can cause a denial of service attack. IBM X-Force ID: 145456.

Affected products

• IBM WebSphere Mq: from 8.0.0.0, up to and including 8.0.0.10; from 9.0.0.0, up to and including 9.0.0.5; from 9.0.1, up to and including 9.0.5; version 9.1.0.0 only

Published 2018-11-09. Last modified 2026-06-17.