IBM WebSphere MQ 7.0.1 before 7.0.1.13, 7.1 before 7.1.0.6, 7.5 before 7.5.0.5, and 8 before 8.0.0.1 allows remote authenticated users to cause a denial of service (queue-slot exhaustion) by leveraging PCF query privileges for a crafted query.
IBM WebSphere MQ 7.5 before 7.5.0.7 and 8.0 before 8.0.0.5 mishandles protocol flows, which allows remote authenticated users to cause a denial of service (channel outage) by leveraging queue-manager rights.