Severity Rating: Critical
Revision Note: V1.0 (February 14, 2012): Bulletin published.
Summary: This security update resolves one publicly disclosed vulnerability and one privately reported vulnerability in Microsoft .NET Framework and Microsoft Silverlight. The vulnerabilities could allow remote code execution on a client system if a user views a specially crafted web page using a web browser that can run XAML Browser Applications (XBAPs) or Silverlight applications. Users whose accounts are configured to have fewer user rights on the system could be less impacted than users who operate with administrative user rights.

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