Microsoft Internet Explorer 7 through 11 allows remote attackers to gain privileges via a crafted web site, aka "Internet Explorer Elevation of Privilege Vulnerability," a different vulnerability than CVE-2015-1743.
https://docs.microsoft.com/en-us/security-updates/securitybulletins/2015/ms15-056
http://www.zerodayinitiative.com/advisories/ZDI-15-251