The bug allows a guest operating system (that’s the OS running inside the virtual machine) to execute code on the host operating system (the OS running the actual virtualization program). Kostya created a short video that shows just how this works. In the video, a Windows XP guest operating system launches the Calculator application in Vista, the host operating system.

The fix is simple… VMWare has already done the patch. Just go to and upgrade to version 2.0.4.

(Via Macworld UK)