IBM Cognos TM1 10.2.2 before FP5, when the host/pmhub/pm/admin AdminGroups setting is empty, allows remote authenticated users to cause a denial of service (configuration outage) via a non-empty value.
The server process in IBM Cognos TM1 10.1.x before 10.1.1 FP1 allows remote attackers to cause a denial of service (daemon crash) via an undocumented API call that triggers the transmission of unexpected data.