Incorrect access control in zam64.sys, zam32.sys in MalwareFox AntiMalware where IOCTL’s 0x80002014, 0x80002018 expose unrestricted disk read/write capabilities respectively. A non-privileged process can open a handle to .ZemanaAntiMalware, register with the driver using IOCTL 0x80002010 and send these IOCTL’s to escalate privileges by overwriting the boot sector or overwriting critical code in the pagefile.

Source: CVE-2021-31727

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