TmComm.sys 1.5.0.1052 in the Trend Micro Anti-Rootkit Common Module (RCM), with the VsapiNI.sys 3.320.0.1003 scan engine, as used in Trend Micro PC-cillin Internet Security 2007, Antivirus 2007, Anti-Spyware for SMB 3.2 SP1, Anti-Spyware for Consumer 3.5, Anti-Spyware for Enterprise 3.0 SP2, Client / Server / Messaging Security for SMB 3.5, Damage Cleanup Services 3.2, and possibly other products, assigns Everyone write permission for the \\.\TmComm DOS device interface, which allows local users to access privileged IOCTLs and execute arbitrary code or overwrite arbitrary memory in the kernel context.

TmComm.sys 1.5.0.1052 in the Trend Micro Anti-Rootkit Common Module (RCM), with the VsapiNI.sys 3.320.0.1003 scan engine, as used in Trend Micro PC-cillin Internet Security 2007, Antivirus 2007, Anti-Spyware for SMB 3.2 SP1, Anti-Spyware for Consumer 3.5, Anti-Spyware for Enterprise 3.0 SP2, Client / Server / Messaging Security for SMB 3.5, Damage Cleanup Services 3.2, and possibly other products, assigns Everyone write permission for the \\.\TmComm DOS device interface, which allows local users to access privileged IOCTLs and execute arbitrary code or overwrite arbitrary memory in the kernel context.

CCC Cleaner, provided by Cyber Clean Center between January 25 and February 9, 2007, contains a buffer overflow vulnerability that occurs when it scans UPX-packed executables. This vulnerability is caused by a buffer overflow vulnerability in the scan processing of UPX compressed executables found in TrendMicro Antivirus. For details of this vulnerability, please refer to TrendMicro's website. CCC Cleaner is affected by this vulnerability only when the following file is contained in the "CCC Cleaner" folder. Filenames: lpt$vpn.185 As of February 13, 2006, Trend Micro has announced that the vulnerability "the Anti-Rootkit Common Module (TmComm.sys)" disclosed on February 11, 2006 does not affect CCC Cleaner. For more information, refer to the vendor's website.