The TCP/IP stack in Microsoft Windows Vista SP1 and SP2, Windows Server 2008 Gold, SP2, and R2, and Windows 7 does not properly handle malformed IPv6 packets, which allows remote attackers to cause a denial of service (system hang) via multiple crafted packets, aka "IPv6 Memory Corruption Vulnerability."
https://oval.cisecurity.org/repository/search/definition/oval%3Aorg.mitre.oval%3Adef%3A11845
https://docs.microsoft.com/en-us/security-updates/securitybulletins/2010/ms10-058