VMware vSphere Client 4.0, 4.1, 5.0 before Update 3, and 5.1 before Update 2 does not properly validate updates to Client files, which allows remote attackers to trigger the downloading and execution of an arbitrary program via unspecified vectors.

VMware vCenter Server 4.0 before Update 4b and 4.1 before Update 3a, VMware VirtualCenter 2.5, VMware vSphere Client 4.0 before Update 4b and 4.1 before Update 3a, VMware VI-Client 2.5, VMware ESXi 3.5 through 4.1, and VMware ESX 3.5 through 4.1 do not properly implement the management authentication protocol, which allow remote servers to execute arbitrary code or cause a denial of service (memory corruption) via unspecified vectors.

Certain ActiveX controls in (1) tsgetxu71ex552.dll and (2) tsgetx71ex552.dll in Tom Sawyer GET Extension Factory 5.5.2.237, as used in VI Client (aka VMware Infrastructure Client) 2.0.2 before Build 230598 and 2.5 before Build 204931 in VMware Infrastructure 3, do not properly handle attempted initialization within Internet Explorer, which allows remote attackers to execute arbitrary code or cause a denial of service (memory corruption) via a crafted HTML document.