cvedb.io
CVE-2021-31728
HIGH · CVSS 7.8
EPSS exploitation probability: 0%
Published 2021-05-17T13:15:07.803 · Last modified 2026-06-17T03:52:11.043

Summary

Incorrect access control in zam64.sys, zam32.sys in MalwareFox AntiMalware 2.74.0.150 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.

Affected products

malwarefox — antimalware

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References

This product uses data from the NVD API but is not endorsed or certified by the NVD. Informational only; not professional security advice.