The Client/Server Run-time Subsystem (CSRSS) in Microsoft Windows 2000 SP4, XP SP2 and SP3, and Server 2003 SP2 does not properly kill processes after a logout, which allows local users to obtain sensitive information or gain privileges via a crafted application that continues to execute throughout the logout of one user and the login session of the next user, aka "CSRSS Local Privilege Elevation Vulnerability."
https://oval.cisecurity.org/repository/search/definition/oval%3Aorg.mitre.oval%3Adef%3A8304
https://docs.microsoft.com/en-us/security-updates/securitybulletins/2010/ms10-011