CVE-2011-0664: Microsoft .NET Framework

High severity, CVSS 9.3. EPSS: 16% chance of exploitation in the next 30 days.

Microsoft .NET Framework 2.0 SP1 and SP2, 3.5 Gold and SP1, 3.5.1, and 4.0, and Silverlight 4 before 4.0.60531.0, does not properly validate arguments to unspecified networking API functions, which allows remote attackers to execute arbitrary code via (1) a crafted XAML browser application (aka XBAP), (2) a crafted ASP.NET application, (3) a crafted .NET Framework application, or (4) a crafted Silverlight application, aka ".NET Framework Array Offset Vulnerability."

Affected products

• Microsoft .NET Framework: version 4.0 only; version 3.5.1 only; version 2.0 only; version 3.5 only
• Microsoft Silverlight: version 4.0.60310.0 only

Published 2011-06-16. Last modified 2026-06-16.