MS11-056 - Important : Vulnerabilities in Windows Client/Server Run-time Subsystem Could Allow Eleva


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Severity Rating: Important
Revision Note: V1.1 (July 21, 2011): Added a link to Microsoft Knowledge Base Article 2507938 under Known Issues in the Executive Summary.
Summary: This security update resolves five privately reported vulnerabilities in the Microsoft Windows Client/Server Run-time Subsystem (CSRSS). The vulnerabilities could allow elevation of privilege if an attacker logs on to a user's system and runs a specially crafted application. An attacker must have valid logon credentials and be able to log on locally to exploit the vulnerabilities.


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