Unspecified vulnerability in the OpenProcess function in VMware Workstation 5.5.x before 5.5.8 build 108000, VMware Workstation 6.0.x before 6.0.5 build 109488, VMware Player 1.x before 1.0.8 build 108000, VMware Player 2.x before 2.0.5 build 109488, VMware ACE 1.x before 1.0.7 build 108880, VMware ACE 2.x before 2.0.5 build 109488, and VMware Server before 1.0.7 build 108231 on Windows allows local host OS users to gain privileges on the host OS via unknown vectors.