Incorrect access control in zam64.sys, zam32.sys in MalwareFox AntiMalware allows a non-privileged process to open a handle to .ZemanaAntiMalware, register itself with the driver by sending IOCTL 0x80002010, allocate executable memory using a flaw in IOCTL 0x80002040, install a hook with IOCTL 0x80002044 and execute the executable memory using this hook with IOCTL 0x80002014 or 0x80002018, this exposes ring 0 code execution in the context of the driver allowing the non-privileged process to elevate privileges.

Source: CVE-2021-31728

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