A remote code execution vulnerability exists when the Windows Imaging API improperly handles objects in memory. The vulnerability could corrupt memory in a way that enables an attacker to execute arbitrary code in the context of the current user. To exploit the vulnerability, an attacker would have to convince a user to open a specially crafted .WIM file. The update addresses the vulnerability by modifying how the WIM service handles objects in memory.
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– Scott Cheney, Manager of Information Security, Sierra View Medical Center