The Windows DirectWrite library, as used in Microsoft .NET Framework 3.0 SP2, 3.5, 3.5.1, 4, 4.5, 4.5.1, and 4.5.2; Office 2007 SP3 and 2010 SP2; Live Meeting 2007 Console; Lync 2010; Lync 2010 Attendee; Lync 2013 SP1; Lync Basic 2013 SP1; Silverlight 5 before 5.1.40416.00; and Silverlight 5 Developer Runtime before 5.1.40416.00, allows remote attackers to execute arbitrary code via a crafted TrueType font, aka "TrueType Font Parsing Vulnerability."

References

• https://nvd.nist.gov/vuln/detail/CVE-2015-1671
• https://docs.microsoft.com/en-us/security-updates/securitybulletins/2015/ms15-044
• http://www.securityfocus.com/bid/74490
• http://www.securitytracker.com/id/1032281