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Threat LevelLow threatDamageHighDistributionNot widespread
Common name:MS10-060
Technical name:MS10-060
Threat level:Medium
Alias:Vulnerabilities in the Microsoft .NET Common Language Runtime and in Microsoft Silverlight Could Allow Remote Code Execution

It is a group of critical vulnerabilities in the .NET Common Language Runtime and in Silverlight, which allows hackers to gain remote control of the affected computer with the same privileges as the logged on user.

Affected platforms:

Windows 2003/XP/2000/NT

First detected on:Aug. 11, 2010
Detection updated on:Aug. 24, 2010

Brief Description 


MS10-060 is not categorized as virus, worm, Trojan or backdoor. It is a group of critical vulnerabilities in the .NET Common Language Runtime and Silverlight, which allows arbitrary code to be remotely executed in the vulnerable computer.

The Common Language Runtime (CLR) is a run-time environment provided by the .NET Framework which makes the development process easier.

The affected components are:

  • .NET Framework 3.5.1 on Windows 2008 R2/7.
  • .NET Framework 3.5 on Windows 2008/Vista/2003/XP.
  • .NET Framework 2.0 on Windows 2008/Vista/2003/XP.
  • Silverlight 2 and 3.


This vulnerability can be exploited using different means:

  • By hosting a specially crafted website that contains a specially crafted XBAP (XAML browser application) and enticing users to visit it.
  • By uploading a malicious ASP.NET application to a web hosting environment.
  • By placing a malicious .NET Framework application on a network share and enticing users to execute it.


If you have any of the vulnerable components, it is recommended to download and apply the security patch for this vulnerability. Click here to access the web page for downloading the patch.

Bear in mind that this security bulletin replaces a previous one, called MS09-061.