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."