The actual flaw is with the MHTML protocol handler in Windows--not in Internet Explorer
itself--and affects all versions of the Windows operating system. However, Internet Explorer is the only known attack vector for exploiting the vulnerability.
Attacks exploiting this flaw are similar to cross-site scripting attacks and enable the attacker to intercept and collect user information, spoof the content that is displayed to the browser, or interfere with the user's browsing experience in other ways. It is also possible that the attacker may be able to run malicious scripts within the context of the IE session.