Trend Micro's Virus Scan API (VSAPI) and Advanced Threat Scan Engine (ATSE) - are vulnerable to a memory exhaustion vulnerability that may lead to denial-of-service or system freeze if exploited by an attacker using a specially crafted file.

Trend Micro has repackaged installers for several Trend Micro products that were found to utilize a version of an install package that had a DLL hijack vulnerability that could be exploited during a new product installation. The vulnerability was found to ONLY be exploitable during an initial product installation by an authorized user. The attacker must convince the target to download malicious DLL locally which must be present when the installer is run.

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.

Trend Micro OfficeScan 6.0 in Client/Server/Messaging (CSM) Suite for SMB 2.0 before 6.0.0.1385, and OfficeScan Corporate Edition (OSCE) 6.5 before 6.5.0.1418, 7.0 before 7.0.0.1257, and 7.3 before 7.3.0.1053 allow remote attackers to remove OfficeScan clients via a certain HTTP request that invokes the OfficeScan CGI program.

Trend Micro OfficeScan 6.0 in Client/Server/Messaging (CSM) Suite for SMB 2.0 before 6.0.0.1385, and OfficeScan Corporate Edition (OSCE) 6.5 before 6.5.0.1418, 7.0 before 7.0.0.1257, and 7.3 before 7.3.0.1053 allow remote attackers to delete files via a modified filename parameter in a certain HTTP request that invokes the OfficeScan CGI program.

Multiple interpretation error in Trend Micro (1) PC-Cillin 2005 12.0.1244 with the 7.510.1002 engine and (2) OfficeScan 7.0 with the 7.510.1002 engine allows remote attackers to bypass virus scanning via a file such as BAT, HTML, and EML with an "MZ" magic byte sequence which is normally associated with EXE, which causes the file to be treated as a safe type that could still be executed as a dangerous file type by applications on the end system, as demonstrated by a "triple headed" program that contains EXE, EML, and HTML content, aka the "magic byte bug."