An issue was discovered in ZOHO ManageEngine OpManager 12.2. An authenticated user can upload any file they want to share in the "Group Chat" or "Alarm" section. This functionality can be abused by a malicious user by uploading a web shell.
An XML External Entity injection (XXE) vulnerability exists in Zoho ManageEngine Network Configuration Manager and OpManager before 12.3.214 via the RequestXML parameter in a /devices/ProcessRequest.do GET request. For example, the attacker can trigger the transmission of local files to an arbitrary remote FTP server.