Software Engineering Institute

Microsoft Internet Explorer contatins a vulnerabilty that could be exploited when Internet Explorer attempts to interpret Web pages that contain malformed property objects. According to Microsoft Security Bulletin MS08-010:

When Internet Explorer calls the property method it may corrupt memory in such a way that an attacker could execute arbitrary code.

Note that this issue affects Internet Explorer versions 6 and 7.

A remote, unauthenticated attacker may be able to execute arbitrary code with the privileges of the user who is running the vulnerable application or cause a denial-of-service condition.

Update
Microsoft has released an update to address this issue. See Microsoft Security Bulletin MS08-010 for more details.

Disable scripting

Disable scripting as specified in the Securing Your Web Browser document and the Malicious Web Scripts FAQ.

Do not follow unsolicited links

In order to convince users to visit their sites, attackers often use URL encoding, IP address variations, long URLs, intentional misspellings, and other techniques to create misleading links. Do not click on unsolicited links received in email, instant messages, web forums, or internet relay chat (IRC) channels. Type URLs directly into the browser to avoid these misleading links. While these are generally good security practices, following these behaviors will not prevent exploitation of this vulnerability in all cases, particularly if a trusted site has been compromised or allows cross-site scripting.