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.

The Microsoft virtual machine (VM) in Internet Explorer 4.x and 5.x allows a remote attacker to read files via a malicious Java applet that escapes the Java sandbox, aka the "VM File Reading" vulnerability.

Internet Explorer 4.x and 5.x allows remote web servers to access files on the client that are outside of its security domain, aka the "Image Source Redirect" vulnerability.

Internet Explorer 5 does not modify the security zone for a document that is being loaded into a window until after the document has been loaded, which could allow remote attackers to execute Javascript in a different security context while the document is loading.

Buffer overflow in Internet Explorer 4.0 via EMBED tag.

Internet Explorer 4 treats a 32-bit number ("dotless IP address") in the a URL as the hostname instead of an IP address, which causes IE to apply Local Intranet Zone settings to the resulting web page, allowing remote malicious web servers to conduct unauthorized activities by using URLs that contain the dotless IP address for their server.

Buffer overflow in the Window.External function in the JScript Scripting Engine in Internet Explorer 4.01 SP1 and earlier allows remote attackers to execute arbitrary commands via a malicious web page.

Buffer overflow in Internet Explorer 4.01 and earlier allows remote attackers to execute arbitrary commands via a long URL with the "mk:" protocol, aka the "MK Overrun security issue."

Internet Explorer 4.0 allows remote attackers to read arbitrary text and HTML files on the user's machine via a small IFRAME that uses Dynamic HTML (DHTML) to send the data to the attacker, aka the Freiburg text-viewing issue.

When a Web site redirects the browser to another site, Internet Explorer 3.02 and 4.0 automatically resends authentication information to the second site, aka the "Page Redirect Issue."

Internet Explorer 5.0 and 5.01 allows remote attackers to bypass the cross frame security policy and read files via the external.NavigateAndFind function.

Internet Explorer 5.01 and earlier allows a remote attacker to create a reference to a client window and use a server-side redirect to access local files via that window, aka "Server-side Page Reference Redirect."

A Microsoft ActiveX control allows a remote attacker to execute a malicious cabinet file via an attachment and an embedded script in an HTML mail, aka the "Active Setup Control" vulnerability.

Internet Explorer 4.x or 5.x with Word 97 allows arbitrary execution of Visual Basic programs to the IE client through the Word 97 template, which doesn't warn the user that the template contains executable content. Also applies to Outlook when the client views a malicious email message.

By default, Internet Explorer 5.0 and other versions enables the "Navigate sub-frames across different domains" option, which allows frame spoofing.

The Eyedog ActiveX control is marked as "safe for scripting" for Internet Explorer, which allows a remote attacker to execute arbitrary commands as demonstrated by Bubbleboy.

Buffer overflow in the Eyedog ActiveX control allows a remote attacker to execute arbitrary commands.

The scriptlet.typelib ActiveX control is marked as "safe for scripting" for Internet Explorer, which allows a remote attacker to execute arbitrary commands as demonstrated by Bubbleboy.

The Preloader ActiveX control used by Internet Explorer allows remote attackers to read arbitrary files.