An input validation vulnerability found in multiple Trend Micro products utilizing a particular version of a specific rootkit protection driver could allow an attacker in user-mode with administrator permissions to abuse the driver to modify a kernel address that may cause a system crash or potentially lead to code execution in kernel mode. An attacker must already have obtained administrator access on the target machine (either legitimately or via a separate unrelated attack) to exploit this vulnerability.

Stack-based buffer overflow in cgiRecvFile.exe in Trend Micro OfficeScan 7.3 patch 4 build 1362 and other builds, OfficeScan 8.0 and 8.0 SP1, and Client Server Messaging Security 3.6 allows remote attackers to execute arbitrary code via an HTTP request containing a long ComputerName parameter.

Multiple buffer overflows in the Trend Micro OfficeScan Web-Deployment SetupINICtrl ActiveX control in OfficeScanSetupINI.dll, as used in OfficeScan 7.0 before Build 1344, OfficeScan 7.3 before Build 1241, and Client / Server / Messaging Security 3.0 before Build 1197, allow remote attackers to execute arbitrary code via a crafted HTML document.

Buffer overflow in the Trend Micro Scan Engine 8.000 and 8.300 before virus pattern file 4.245.00, as used in other products such as Cyber Clean Center (CCC) Cleaner, allows remote attackers to execute arbitrary code via a malformed UPX compressed executable.

Heap-based buffer overflow in Trend Micro AntiVirus Library VSAPI before 7.510, as used in multiple Trend Micro products, allows remote attackers to execute arbitrary code via a crafted ARJ file with long header file names that modify pointers within a structure.

Trend OfficeScan Corporate Edition 5.58 and possibly earler does not drop privileges when opening a help window from a virus detection pop-up window, which allows local users to gain SYSTEM privileges.

Trend Micro OfficeScan 3.0 - 6.0 has default permissions of "Everyone Full Control" on the installation directory and registry keys, which allows local users to disable virus protection.

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.