The Start Before Logon (SBL) functionality in Cisco AnyConnect Secure Mobility Client (formerly AnyConnect VPN Client) before 2.3.254 on Windows, and on Windows Mobile, allows local users to gain privileges via unspecified user-interface interaction, aka Bug ID CSCta40556.
http://www.securitytracker.com/id?1025591
http://www.securityfocus.com/bid/48077
http://www.cisco.com/en/US/products/products_security_advisory09186a0080b80123.shtml