The IPv6 implementation in Microsoft Windows 8, Windows Server 2012, and Windows RT does not properly validate packets, which allows remote attackers to cause a denial of service (system hang) via crafted ICMPv6 Router Advertisement packets, aka "TCP/IP Version 6 (IPv6) Denial of Service Vulnerability."
https://exchange.xforce.ibmcloud.com/vulnerabilities/90755
https://docs.microsoft.com/en-us/security-updates/securitybulletins/2014/ms14-006
http://www.securitytracker.com/id/1029747
http://www.securityfocus.com/bid/65409