This paper gives an example of the variety of shatter attack which should be corrected by MS04-032 (KB840987). This sort of attack can typically be used for local privilege escalation.
You can download this advisory from the following link: https://packetstormsecurity.com/files/download/34690/SetWindowLong_Shatter_Attacks.pdf
Source: https://packetstormsecurity.com/files/34690/SetWindowLong_Shatter_Attacks.pdf.html