The virtual networking stack in VMware Workstation 7.0 before 7.0.1 build 227600, VMware Workstation 6.5.x before 6.5.4 build 246459 on Windows, VMware Player 3.0 before 3.0.1 build 227600, VMware Player 2.5.x before 2.5.4 build 246459 on Windows, VMware ACE 2.6 before 2.6.1 build 227600 and 2.5.x before 2.5.4 build 246459, VMware Server 2.x, and VMware Fusion 3.0 before 3.0.1 build 232708 and 2.x before 2.0.7 build 246742 allows remote attackers to obtain sensitive information from memory on the host OS by examining received network packets, related to interaction between the guest OS and the host vmware-vmx process.

VMware Workstation 6.5.x before 6.5.3 build 185404, VMware Player 2.5.x before 2.5.3 build 185404, VMware ACE 2.5.x before 2.5.3 build 185404, VMware Server 1.x before 1.0.10 build 203137 and 2.x before 2.0.2 build 203138, VMware Fusion 2.x before 2.0.6 build 196839, VMware ESXi 3.5 and 4.0, and VMware ESX 2.5.5, 3.0.3, 3.5, and 4.0, when Virtual-8086 mode is used, do not properly set the exception code upon a page fault (aka #PF) exception, which allows guest OS users to gain privileges on the guest OS by specifying a crafted value for the cs register.