A vulnerability has been reported in Microsoft Internet Explorer, which can be exploited by malicious people to compromise a user's system.
The vulnerability is caused due to an unspecified error and can be exploited to trigger the use of a freed object via a specially crafted web page.
Successful exploitation allows execution of arbitrary code.
NOTE: This vulnerability is currently being actively exploited.
See also: 0-day vulnerability in Internet Explorer 6, 7 and 8