Internet Explorer 5.0, and possibly other versions, may allow remote attackers (malicious web pages) to read known text files from a client's hard drive via a SCRIPT tag with a SRC value that points to the text file.

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."

Internet Explorer 5.5 and earlier allows remote attackers to display a URL in the address bar that is different than the URL that is actually being displayed, which could be used in web site spoofing attacks, aka the "Web page spoofing vulnerability."

Windows Scripting Host in Internet Explorer 5.5 and earlier allows remote attackers to read arbitrary files via the GetObject Javascript function and the htmlfile ActiveX object.

Internet Explorer 5.5 and earlier executes Telnet sessions using command line arguments that are specified by the web site, which could allow remote attackers to execute arbitrary commands if the IE client is using the Telnet client provided in Services for Unix (SFU) 2.0, which creates session transcripts.

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 "/.#./".

HTML e-mail feature in Internet Explorer 5.5 and earlier allows attackers to execute attachments by setting an unusual MIME type for the attachment, which Internet Explorer does not process correctly.

Internet Explorer 5.0 and 5.5, and Outlook Express 5.0 and 5.5, allow remote attackers to execute scripts when Active Scripting is disabled by including the scripts in XML stylesheets (XSL) that are referenced using an IFRAME tag, possibly due to a vulnerability in Windows Scripting Host (WSH).

Internet Explorer 5.0 through 5.5 allows remote attackers to read arbitrary files from the client via the INPUT TYPE element in an HTML form, aka the "File Upload via Form" vulnerability.

The ActiveX control for invoking a scriptlet in Internet Explorer 5.0 through 5.5 renders arbitrary file types instead of HTML, which allows an attacker to read arbitrary files, aka a variant of the "Scriptlet Rendering" vulnerability.

A function in Internet Explorer 5.0 through 5.5 does not properly verify the domain of a frame within a browser window, which allows a remote attacker to read client files, aka a new variant of the "Frame Domain Verification" vulnerability.

Internet Explorer before 5.5 forwards cached user credentials for a secure web site to insecure pages on the same web site, which could allow remote attackers to obtain the credentials by monitoring connections to the web server, aka the "Cached Web Credentials" vulnerability.

The ActiveX control for invoking a scriptlet in Internet Explorer 4.x and 5.x renders arbitrary file types instead of HTML, which allows an attacker to read arbitrary files, aka the "Scriptlet Rendering" vulnerability.

The IFRAME of the WebBrowser control in Internet Explorer 5.01 allows a remote attacker to violate the cross frame security policy via the NavigateComplete2 event.

Internet Explorer 4.x and 5.x allows remote attackers to execute arbitrary commands via a buffer overflow in the ActiveX parameter parsing capability, aka the "Malformed Component Attribute" vulnerability.

Internet Explorer 4.x and 5.x does not properly verify the domain of a frame within a browser window, which allows a remote attacker to read client files via the frame, aka the "Frame Domain Verification" vulnerability.

Internet Explorer 4.0 and 5.0 allows a malicious web site to obtain client cookies from another domain by including that domain name and escaped characters in a URL, aka the "Unauthorized Cookie Access" vulnerability.