UNPATCHED: Windows Unspecified Privilege Escalation Vulnerability

The following has been copied/pasted from http://secunia.com/advisories/41525/

Description
A [less critical] vulnerability has been reported in Microsoft Windows, which can be exploited by malicious, local users to gain escalated privileges.

The vulnerability is caused due to an unspecified error. No more information is currently available.

The following versions are reportedly affected:
* Windows Vista SP1 / SP2
* Windows Vista x64 Edition SP1 / SP2
* Windows Server 2008 for 32-bit Systems SP1 / SP2
* Windows Server 2008 x64 Edition SP1 / SP2
* Windows Server 2008 for x64-based Systems (optionally with SP2)
* Windows Server 2008 for Itanium-based Systems (optionally with SP2)

NOTE: The vulnerability is currently being actively exploited.

Solution
Grant only trusted users access to affected systems.

Provided and/or discovered by
Reported as a 0-day.