Uniscribe in Microsoft Windows Vista SP2, Windows Server 2008 SP2 and R2 SP1, and Windows 7 SP1 allows remote attackers to execute arbitrary code via a crafted web site, aka "Windows Uniscribe Remote Code Execution Vulnerability."
https://www.exploit-db.com/exploits/41651/
https://portal.msrc.microsoft.com/en-US/security-guidance/advisory/CVE-2017-0088