VMware vSphere Client 5.0 before Update 3 and 5.1 before Update 2 does not properly validate X.509 certificates, which allows man-in-the-middle attackers to spoof SSL servers via a crafted certificate.

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.