CVE-2015-1670: Microsoft .NET Framework

Medium severity, CVSS 4.3. EPSS: 16% 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, allows remote attackers to obtain sensitive information from process memory via a crafted OpenType font on a web site, aka "OpenType Font Parsing Vulnerability."

Affected products

• Microsoft .NET Framework: version 3.0 only; version 3.5 only; version 3.5.1 only; version 4.0 only; version 4.5 only; version 4.5.1 only; …

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