There are several practical workarounds in this bulletin. Primarily, enable Protected Mode in the Internet zone and make sure to move any questionable sites out of the Trusted zone.
Related posts:
- Microsoft Advisory: Vulnerability in IE
- MS Security Adv: Vuln in Web Proxy Auto-Discovery: Info Disclosure
- Microsoft Advisory: Vulnerability in Internet Explorer Could Allow Remote Code Execution
- New IE 6 & 7 Security Advisory
- Microsoft Security Advisory: Vuln in the ActiveX Control for the Snapshot Viewer for Microsoft Access Could Allow Remote Code Execution