An unspecified API in Microsoft Windows 2000, Windows XP, Windows Server 2003, Windows Vista, Windows Server 2008, and Windows 7 does not validate arguments, which allows local users to cause a denial of service (system crash) via a crafted application.
The resolver in the DNS Server service in Microsoft Windows Server 2008 before R2 overwrites cached server names and TTL values in NS records during the processing of a response to an A record query, which allows remote attackers to trigger continued resolvability of revoked domain names via a "ghost domain names" attack.