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.
https://exchange.xforce.ibmcloud.com/vulnerabilities/11059
http://secunia.com/advisories/7881
http://kb.trendmicro.com/solutions/solutionDetail.asp?solutionId=13353
http://archives.neohapsis.com/archives/vulnwatch/2003-q1/0020.html