Unspecified vulnerability in a guest virtual device driver in VMware Workstation before 5.5.9 build 126128, and 6.5.1 and earlier 6.x versions; VMware Player before 1.0.9 build 126128, and 2.5.1 and earlier 2.x versions; VMware ACE before 1.0.8 build 125922, and 2.5.1 and earlier 2.x versions; VMware Server 1.x before 1.0.8 build 126538 and 2.0.x before 2.0.1 build 156745; VMware Fusion before 2.0.1; VMware ESXi 3.5; and VMware ESX 3.0.2, 3.0.3, and 3.5 allows guest OS users to cause a denial of service (host OS crash) via unknown vectors.

Heap-based buffer overflow in the VMware Host Guest File System (HGFS) in VMware Workstation 6 before 6.0.4 build 93057, VMware Player 2 before 2.0.4 build 93057, VMware ACE 2 before 2.0.2 build 93057, and VMware Fusion before 1.1.2 build 87978, when folder sharing is used, allows guest OS users to execute arbitrary code on the host OS via unspecified vectors.