Cross-site scripting (XSS) vulnerability in ASP.NET in Microsoft .NET Framework 4, 4.5, 4.5.1, 4.5.2, and 4.6 allows remote attackers to inject arbitrary web script or HTML via a crafted value, aka ".NET Elevation of Privilege Vulnerability."
https://docs.microsoft.com/en-us/security-updates/securitybulletins/2015/ms15-118
http://www.securitytracker.com/id/1034116
http://www.securityfocus.com/archive/1/536875/100/0/threaded
http://packetstormsecurity.com/files/134314/Microsoft-.NET-Framework-XSS-Privilege-Escalation.html