Add or Remove Programs entry for Security Update for Microsoft .NET Framework 2.0 (KB917283). This updates fixes a ASP.NET vulnerability in Internet Information Server.

Vulnerability information:

"This vulnerability could allow an attacker to bypass ASP.Net security and gain unauthorized access to objects in the Application folder explicitly by name. Note that this vulnerability would not allow an attacker to execute code or to elevate their user rights directly, but it could be used to produce useful information that could be used to try to further compromise the affected system."