Unspecified vulnerability in the kernel in Microsoft Windows 2000 SP4, probably a buffer overflow, allows local users to obtain privileges via unspecified vectors involving an "unchecked buffer."
The thread termination routine in the kernel for Windows NT 4.0 and 2000 (NTOSKRNL.EXE) allows local users to modify kernel memory and execution flow via steps in which a terminating thread causes Asynchronous Procedure Call (APC) entries to free the wrong data, aka the "Windows Kernel Vulnerability."