Microsoft .NET Framework 4.6 and 4.6.1 mishandles library loading, which allows local users to gain privileges via a crafted application, aka ".NET Framework Remote Code Execution Vulnerability."
https://docs.microsoft.com/en-us/security-updates/securitybulletins/2016/ms16-041
http://www.zerodayinitiative.com/advisories/ZDI-16-234
http://www.securitytracker.com/id/1035535
http://www.securityfocus.com/archive/1/538063/100/0/threaded
http://seclists.org/fulldisclosure/2016/Apr/42
http://packetstormsecurity.com/files/136671/.NET-Framework-4.6-DLL-Hijacking.html