Windows 7 - Internet Explorer has Three Vulnerabilities

Three vulnerabilities have been reported in Internet Explorer, which can be exploited by malicious people to compromise a user's system.

1) An error when accessing deleted objects in memory can be exploited to corrupt memory via a specially crafted web page.

2) An error when handling table operations in specific situations can be exploited to corrupt memory via a specially crafted web page.

3) Another error when accessing deleted objects in memory can be exploited to corrupt memory via a specially crafted web page.

Successful exploitation of the vulnerabilities may allow execution of arbitrary code.

NOTE: This security update also implements defence-in-depth security measures to mitigate known attack vectors within Internet Explorer for vulnerabilities when reading persisted data in some components and ActiveX controls developed with certain versions of ATL.

Windows 7 RTM is safe except for Windows 7 Release Candidate (build 7100)