The Client/Server Run-time Subsystem (aka CSRSS) in the Win32 subsystem in Microsoft Windows XP SP2 and SP3, Server 2003 SP2, Vista SP2, and Server 2008 SP2, when a Chinese, Japanese, or Korean system locale is used, can access uninitialized memory during the processing of Unicode characters, which allows local users to gain privileges via a crafted application, aka "CSRSS Elevation of Privilege Vulnerability."
https://oval.cisecurity.org/repository/search/definition/oval%3Aorg.mitre.oval%3Adef%3A14879
https://docs.microsoft.com/en-us/security-updates/securitybulletins/2012/ms12-003
http://www.us-cert.gov/cas/techalerts/TA12-010A.html
http://www.securitytracker.com/id?1026495