The default installation of Trend Micro OfficeScan 3.0 through 3.54 and 5.x allows remote attackers to bypass authentication from cgiChkMasterPasswd.exe and gain access to the web management console via a direct request to cgiMasterPwd.exe.
Trend Micro OfficeScan Corporate Edition (aka Virus Buster) 3.53 allows remote attackers to access sensitive information from the hotdownload directory without authentication, such as the ofcscan.ini configuration file, which contains a weakly encrypted password.