CVE-2012-1874
Microsoft Internet Explorer 8 and 9 does not properly handle objects in memory, which allows user-assisted remote attackers to execute arbitrary code by accessing a deleted object, aka "Developer Toolbar Remote Code Execution Vulnerability."
Date published : 2012-06-12
http://www.us-cert.gov/cas/techalerts/TA12-164A.html
https://docs.microsoft.com/en-us/security-updates/securitybulletins/2012/ms12-037