vbscript.dll in Microsoft VBScript 5.6 through 5.8, as used with Internet Explorer 6 through 11 and other products, allows remote attackers to execute arbitrary code or cause a denial of service (memory corruption) via a crafted web site, aka "VBScript Memory Corruption Vulnerability."
https://docs.microsoft.com/en-us/security-updates/securitybulletins/2015/ms15-066
https://docs.microsoft.com/en-us/security-updates/securitybulletins/2015/ms15-065