CVE-2015-1671: Microsoft Windows Remote Code Execution Vulnerability

High severity, CVSS 7.8. Actively exploited: in CISA KEV since 2022-05-25. EPSS: 49% chance of exploitation in the next 30 days.

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."

Affected products

• Microsoft .NET Framework: version 3.0 only; version 4.0 only; version 4.5 only; version 4.5.1 only; version 4.5.2 only; version 3.5.1 only; …
• Microsoft Live Meeting: version 2007 only
• Microsoft Lync: version 2010 only; version 2013 only
• Microsoft Silverlight: version 5.0 only

Published 2015-05-13. Last modified 2026-06-17.