Microsoft .NET Framework 2.0 SP2 and 3.5.1 does not properly consider trust levels during construction of output data, which allows remote attackers to obtain sensitive information via (1) a crafted XAML browser application (aka XBAP) or (2) a crafted .NET Framework application, aka "Code Access Security Info Disclosure Vulnerability."
https://oval.cisecurity.org/repository/search/definition/oval%3Aorg.mitre.oval%3Adef%3A15785
https://docs.microsoft.com/en-us/security-updates/securitybulletins/2012/ms12-074
http://www.us-cert.gov/cas/techalerts/TA12-318A.html
http://www.securitytracker.com/id?1027753