Microsoft .NET Framework 1.0 SP3 1.1 SP1 2.0 SP2 3.5 3.5.1 4 and 4.5 does not properly validate function parameters which allows remote attackers to execute arbitrary code via (1) a crafted XAML browser application (aka XBAP) (2) a crafted ASP.NET application or (3) a crafted .NET Framework application aka \.NET Framework Parameter Validation Vulnerability.\