source: http://www.securityfocus.com/bid/1911/info

The ASP ISAPI file parser does not properly execute certain malformed ASP files that contain scripts with the LANGUAGE parameter containing a buffer of over 2200 characters and have the RUNAT value set as 'server'. Depending on the data entered into the buffer, a denial of service attack could be launched or arbitrary code could be executed under the SYSTEM privilege level in the event that a malicious ASP file were locally executed on IIS.

https://github.com/offensive-security/exploit-database-bin-sploits/raw/master/bin-sploits/20383.zip