CVE-2011-1257
Race condition in Microsoft Internet Explorer 6 through 8 allows remote attackers to execute arbitrary code or cause a denial of service (memory corruption) via vectors involving access to an object, aka "Window Open Race Condition Vulnerability."
Date published : 2011-08-10
http://www.us-cert.gov/cas/techalerts/TA11-221A.html
https://docs.microsoft.com/en-us/security-updates/securitybulletins/2011/ms11-057