Technical Information

Brief overview of the risk:
The vulnerability could allow elevation of privilege if an attacker logged on to an affected system that is configured with a Chinese, Japanese, or Korean system locale. An attacker who successfully exploited this vulnerability could then install programs; view, change, or delete data; or create new accounts with full user rights.
Detailed Information on the risk:

An elevation of privilege vulnerability exists in the Windows CSRSS due to the way that the CSRSS assigns memory for specific user transactions. An attacker who successfully exploited this vulnerability could run arbitrary code in the security context of the local system. An attacker could then install programs; view, change, or delete data; or create new accounts with full user rights.

Further information on this exploit is available at : MS10-069