runmqsc in IBM WebSphere MQ 8.x before 8.0.0.5 allows local users to bypass intended queue-manager command access restrictions by leveraging authority for +connect and +dsp.
IBM WebSphere MQ 8.0.0.4 on IBM i platforms allows local users to discover cleartext certificate-keystore passwords within MQ trace output by leveraging administrator privileges to execute the mqcertck program.