Microsoft Internet Explorer 5.01 and 6.0 allow remote attackers to execute arbitrary code via malformed Content-Disposition and Content-Type header fields that cause the application for the spoofed file type to pass the file back to the operating system for handling rather than raise an error message, aka the first variant of the "Content Disposition" vulnerability.

The zone determination function in Microsoft Internet Explorer 5.5 and 6.0 allows remote attackers to run scripts in the Local Computer zone by embedding the script in a cookie, aka the "Cookie-based Script Execution" vulnerability.

Internet Explorer 6.0 and earlier does not properly handle VBScript in certain domain security checks, which allows remote attackers to read arbitrary files.

Microsoft Internet Explorer 5.01, 5.5 and 6.0 treats objects invoked on an HTML page with the codebase property as part of Local Computer zone, which allows remote attackers to invoke executables present on the local system through objects such as the popup object, aka the "Local Executable Invocation via Object tag" vulnerability.

The rendering engine in Internet Explorer determines the MIME type independently of the type that is specified by the server, which allows remote servers to automatically execute script which is placed in a file whose MIME type does not normally support scripting, such as text (.txt), JPEG (.jpg), etc.

Microsoft Internet Explorer 5.0 through 6.0 allows attackers to cause a denial of service (browser crash) via a crafted FTP URL such as "/.#./".

Internet Explorer 4.x and 5.x does not properly re-validate an SSL certificate if the user establishes a new SSL session with the same server during the same Internet Explorer session, aka one of two different "SSL Certificate Validation" vulnerabilities.

Internet Explorer 4.x and 5.x does not properly verify all contents of an SSL certificate if a connection is made to the server via an image or a frame, aka one of two different "SSL Certificate Validation" vulnerabilities.