The Web Proxy Auto Discovery (WPAD) protocol implementation in Microsoft Windows Vista SP2 Windows Server 2008 SP2 and R2 SP1 Windows 7 SP1 Windows 8.1 Windows Server 2012 Gold and R2 Windows RT 8.1 Windows 10 Gold and 1511 and Internet Explorer 9 through 11 has an improper fallback mechanism which allows remote attackers to gain privileges via NetBIOS name responses aka \WPAD Elevation of Privilege Vulnerability.\