CVE-2012-1524
Microsoft Internet Explorer 9 does not properly handle objects in memory, which allows remote attackers to execute arbitrary code by accessing a deleted object, aka "Attribute Remove Remote Code Execution Vulnerability."
Date published : 2012-07-10
http://www.us-cert.gov/cas/techalerts/TA12-192A.html
https://docs.microsoft.com/en-us/security-updates/securitybulletins/2012/ms12-044