The Windows Shell application in Windows 98, Windows ME, Windows NT 4.0, Windows 2000, Windows XP, and Windows Server 2003 allows remote attackers to execute arbitrary code by spoofing the type of a file via a CLSID specifier in the filename, as demonstrated using Internet Explorer 6.0.2800.1106 on Windows XP.

Microsoft Internet Explorer 6.0, Outlook 2002, and Outlook 2003 allow remote attackers to cause a denial of service (CPU consumption), if "Do not save encrypted pages to disk" is disabled, via a web site or HTML e-mail that contains two null characters (%00) after the host name.

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).

Integer overflow in the Install Engine (inseng.dll) for Internet Explorer 5.01, 5.5, and 6 allows remote attackers to execute arbitrary code via a malicious website or HTML email with a long .CAB file name, which triggers the integer overflow when calculating a buffer length and leads to a heap-based buffer overflow.

Buffer overflow in Microsoft Internet Explorer and Explorer on Windows XP SP1, WIndows 2000, Windows 98, and Windows Me may allow remote malicious servers to cause a denial of service (application crash) and possibly execute arbitrary code via long share names, as demonstrated using Samba.

Microsoft Internet Explorer 6.0 and earlier allows malicious website operators to cause a denial of service (client crash) via JavaScript that continually refreshes the window via self.location.

Buffer overflow in Registration Wizard ActiveX control (regwizc.dll, InvokeRegWizard) 3.0.0.0 for Internet Explorer 4.01 and 5 allows remote attackers to execute arbitrary commands.

Microsoft Internet Explorer 5.22, and other 5 through 6 SP1 versions, sends Referer headers containing https:// URLs in requests for http:// URLs, which allows remote attackers to obtain potentially sensitive information by reading Referer log data.

Microsoft Internet Explorer 6.0 allows remote attackers to cause a denial of service (crash) by creating a web page or HTML e-mail with a textarea in a div element whose scrollbar-base-color is modified by a CSS style, which is then moved.

Internet Explorer 5.50.4134.0100 on Windows ME with "Prompt to allow cookies to be stored on your machine" enabled does not warn a user when a cookie is set using Javascript.

The showHelp() function in Microsoft Internet Explorer 5.01, 5.5, and 6.0 supports certain types of pluggable protocols that allow remote attackers to bypass the cross-domain security model and execute arbitrary code, aka "Improper Cross Domain Security Validation with ShowHelp functionality."

Microsoft Internet Explorer 5.5 and 6.0 allows remote attackers to bypass the cross-domain security model to run malicious script or arbitrary programs via dialog boxes, aka "Improper Cross Domain Security Validation with dialog box."

Internet Explorer 5.5 and 6 with the Q312461 (MS01-055) patch modifies the HTTP_USER_AGENT (UserAgent) information that indicates that the patch has been installed, which could allow remote malicious web sites to more easily identify and exploit vulnerable clients.

Buffer overflow in HHOpen ActiveX control (hhopen.ocx) 1.0.0.1 for Internet Explorer 4.01 and 5 allows remote attackers to execute arbitrary commands via long arguments to the OpenHelp method.

Internet Explorer 4.0 and 4.01 allow a remote attacker to read files via IE's cross frame security, aka the "Cross Frame Navigate" vulnerability.

Microsoft Internet Explorer allows remote attackers to cause a denial of service (resource consumption) via a Javascript src attribute that recursively loads the current web page.

Unknown vulnerability in Internet Explorer 5.01 SP3 through 6.0 SP1 allows remote attackers to cause a denial of service (browser or Outlook Express crash) via HTML with certain input tags that are not properly rendered.

Internet Explorer 5.5 and 6.0 allows remote attackers to cause the File Download dialogue box to misrepresent the name of the file in the dialogue in a way that could fool users into thinking that the file type is safe to download.

Double free vulnerability in mshtml.dll for certain versions of Internet Explorer 6.x allows remote attackers to cause a denial of service (application crash) via a malformed GIF image.

Internet Explorer 5.x and 6.0 allows remote attackers to execute arbitrary programs via a modified directory traversal attack using a URL containing ".." (dot dot) sequences and a filename that ends in "::" which is treated as a .chm file even if it does not have a .chm extension. NOTE: this bug may overlap CVE-2004-0475.