The Windows font library in Microsoft Windows Vista SP2, Windows Server 2008 SP2 and R2 SP1, Windows 7 SP1, Windows 8, Windows 8.1, Windows Server 2012 Gold and R2, Windows RT Gold and 8.1, Windows 10 Gold and 1511, Office 2007 SP3, Office 2010 SP2, Word Viewer, Skype for Business 2016, Lync 2010, Lync 2013 SP1, and Live Meeting 2007 Console allows remote attackers to execute arbitrary code via a crafted embedded font, aka "Graphics Memory Corruption Vulnerability."
https://docs.microsoft.com/en-us/security-updates/securitybulletins/2015/ms15-128
http://www.securitytracker.com/id/1034336
http://www.securitytracker.com/id/1034333