Severity Rating: Important
Revision Note: V1.1 (March 27, 2013): Revised bulletin to remove workaround steps for disabling USB mass storage devices because these steps are not necessary to block known attack vectors. Revised bulletin to remove workaround steps for disabling USB mass storage devices because these steps are not necessary to block known attack vectors. For more information, see Update FAQ.
Summary: This security update resolves three privately reported vulnerabilities in Microsoft Windows. These vulnerabilities could allow elevation of privilege if an attacker gains access to a system.
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