In Zoho ManageEngine SupportCenter Plus before 11023, V3 API requests are vulnerable to authentication bypass. (An API request may, in effect, be executed with the credentials of a user who authenticated in the past.)
OS Command injection vulnerability in Support Center Plus 11 via Executor in Action when creating new schedules.
ManageEngine ServiceDesk Plus through 14104, ServiceDesk Plus MSP through 14000, Support Center Plus through 14000, and Asset Explorer through 6987 allow privilege escalation via query reports.