ExploitFixes
Elevation of privileges under Windows Vista/7 (UAC Bypass) 2010-11-24 09:15:06

A Design Flaw in Windows Kernel API can Lead to privilege escalation.

http://www.codeproject.com/KB/vista-security/uac.aspx
PoC: http://www.exploit-db.com/sploits/uacpoc.zip