Add or Remove Programs entry for Microsoft .NET Framework 1.1 Hotfix (KB886903). This security update for .NET Framework 1.1 addresses a vulnerability in ASP.NET that could allow elevation of privilege and information disclosure.

A canonicalization vulnerability exists in ASP.NET that could allow an attacker to bypass the security of an ASP.NET Web site and gain unauthorized access. An attacker who successfully exploited this vulnerability could take a variety of actions, depending on the specific contents of the website.