Unspecified vulnerability in vmci.sys in the Virtual Machine Communication Interface (VMCI) in VMware Workstation 6.5.1 and earlier, VMware Player 2.5.1 and earlier, VMware ACE 2.5.1 and earlier, and VMware Server 2.0.x before 2.0.1 build 156745 allows local users to gain privileges via unknown vectors.

VMware Workstation before 5.5.4 allows attackers to cause a denial of service against the guest OS by causing the virtual machine process (VMX) to store malformed configuration information.

VMware Workstation before 5.5.4, when running a 64-bit Windows guest on a 64-bit host, allows local users to "corrupt the virtual machine's register context" by debugging a local program and stepping into a "syscall instruction."

The virtual machine process (VMX) in VMware Workstation before 5.5.4 does not properly read state information when moving from the ACPI sleep state to the run state, which allows attackers to cause a denial of service (virtual machine reboot) via unknown vectors.

The memory management in VMware Workstation before 5.5.4 allows attackers to cause a denial of service (Windows virtual machine crash) by triggering certain general protection faults (GPF).