Cross-site scripting vulnerability in Internet Explorer 6 earlier allows remote attackers to execute arbitrary script via an Extended HTML Form, whose output from the remote server is not properly cleansed.
Internet Explorer 5.x and 6 interprets an object as an HTML document even when its MIME Content-Type is text/plain, which could allow remote attackers to execute arbitrary script in documents that the user does not expect, possibly through web applications that use a text/plain type to prevent cross-site scripting attacks.
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.
Internet Explorer 6 and earlier, when used with the Telnet client in Services for Unix (SFU) 2.0, allows remote attackers to execute commands by spawning Telnet with a log file option on the command line and writing arbitrary code into an executable file which is later executed, aka a new variant of the Telnet Invocation vulnerability as described in CVE-2001-0150.
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.
Internet Explorer 5.5 and earlier allows remote attackers to obtain the physical location of cached content and open the content in the Local Computer Zone, then use compiled HTML help (.chm) files to execute arbitrary programs.
Internet Explorer 5.5 and earlier does not properly verify the domain of a frame within a browser window, which allows remote web site operators to read certain files on the client by sending information from a local frame to a frame in a different domain, aka a variant of the "Frame Domain Verification" vulnerability.
Internet Explorer 5.5 and earlier does not properly validate digital certificates when Certificate Revocation List (CRL) checking is enabled, which could allow remote attackers to spoof trusted web sites, aka the "Server certificate validation vulnerability."