CVE-2009-3673

Microsoft Internet Explorer v7 and v8 no maneja adecuadamente los objetos en memoria, lo que permite a atacantes remotos ejecutar código de su elección accediendo a un objeto que (1) no fue adecuadamente inicializado o (2) es borrado, desencadenando en una corrupción de memoria, conocido como "Uninitialized Memory Corruption Vulnerability."

This vulnerability allows remote attackers to potentially execute arbitrary code on vulnerable installations of Microsoft Internet Explorer. User interaction is required to exploit this vulnerability in that the target must visit a malicious page.
The specific flaw exists during a race condition while repetitively clicking between two elements at a fast rate. When clicking back and forth between these two elements a corruption occurs resulting in a call to a dangling pointer which can be further leveraged into code execution via a heap spray. Exploitation of this vulnerability will lead to remote system compromise under the credentials of the currently logged in user.