[原文]The default installation of VirusScan 4.5 and NetShield 4.5 has insecure permissions for the registry key that identifies the AutoUpgrade directory, which allows local users to execute arbitrary commands by replacing SETUP.EXE in that directory with a Trojan Horse.
VirusScan contain a flaw that allows an attacker to replace the SETUP.EXE file with an arbitrary file. During the AutoUpgrade process, the arbitrary file will be run with the same privileges running VirusScan (typically administrator) allowing arbitrary code to be executed.
Currently, there are no known upgrades or patches to correct this issue. It is possible to correct the flaw by implementing the following workarounds: Use operating system directory permissions to protect the directory from arbitrary file writing.