Оно?
http://technet.microsoft.com/en-us/security/bulletin/ms11-083FAQ for Reference Counter Overflow Vulnerability - CVE-2011-2013
What is the scope of the vulnerability?
This is a remote code execution vulnerability in the context of the Windows kernel.
How could an attacker exploit the vulnerability?
An attacker could exploit this vulnerability by sending a continuous flow of specially crafted UDP packets to a closed port on a target system.
What might an attacker use the vulnerability to do?
An attacker who successfully exploited this vulnerability could take complete control of the affected system. An attacker could then install programs; view, change, or delete data; or create new accounts with full user rights.