Stack-based buffer overflow in VBScript in Microsoft Windows 2000 SP4, XP SP2 and SP3, and Server 2003 SP2, when Internet Explorer is used, might allow user-assisted remote attackers to execute arbitrary code via a long string in the fourth argument (aka helpfile argument) to the MsgBox function, leading to code execution when the F1 key is pressed, a different vulnerability than CVE-2010-0483.
The product performs operations on a memory buffer, but it reads from or writes to a memory location outside the buffer's intended boundary. This may result in read or write operations on unexpected memory locations that could be linked to other variables, data structures, or internal program data.