A new exploit has been found on a website related to the Microsoft security updates for June 2007. This is an example of why users should apply patches promptly during the second Tuesday of each month.  

MS07-033: Internet Explorer based Exploit found in the wild
http://isc.sans.org/diary.html?storyid=3036
http://www.symantec.com/enterprise/security_response/weblog/2007/06/deepsight_honeynet_detects_obf.html

QUOTE: Symantec identified a website exploiting a bug from the June Microsoft patches, specifically the Microsoft Internet Explorer Speech API 4 COM Object Instantiation Buffer Overflow Vulnerability.