CVE-2013-0073: Microsoft .NET Framework

High severity, CVSS 10.0. EPSS: 29.6% chance of exploitation in the next 30 days.

The Windows Forms (aka WinForms) component in Microsoft .NET Framework 2.0 SP2, 3.5, 3.5.1, 4, and 4.5 does not properly restrict the privileges of a callback function during object creation, which allows remote attackers to execute arbitrary code via (1) a crafted XAML browser application (XBAP) or (2) a crafted .NET Framework application, aka "WinForms Callback Elevation Vulnerability."

Affected products

• Microsoft .NET Framework: version 3.5 only; version 3.5.1 only; version 4.0 only; version 4.5 only; version 2.0 only

Published 2013-02-13. Last modified 2026-06-16.