Technical Information

Brief overview of the risk:
The vulnerability 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).
Detailed Information on the risk:

A remote code execution vulnerability exists in the way that Microsoft .NET Framework validates certain values within an object. An attacker who successfully exploited this vulnerability could take complete control of an affected system. An attacker could then install programs; view, change, or delete data; or create new accounts with full user rights.

Further information on this exploit is available at : MS11-044