Vulnerability in Microsoft Malware Protection Engine Could Allow Elevation of Privilege – Version: 1.1

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Revision Note: V1.1 (March 8, 2011): Revised advisory FAQ to announce updated version of the MSRT and added Forefront Security for Exchange Server to the list of non-affected software.
Summary: Microsoft is releasing this security advisory to help ensure customers are aware that an update to the Microsoft Malware Protection Engine also addresses a security vulnerability reported to Microsoft. The update addresses a privately reported vulnerability that could allow elevation of privilege if the Microsoft Malware Protection Engine scans a system after an attacker with valid logon credentials has created a specially crafted registry key. An attacker who successfully exploited the vulnerability could gain the same user rights as the LocalSystem account. The vulnerability could not be exploited by anonymous users.

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