An issue in the TVicPort64.sys component of EnTech Taiwan TVicPort Product v4.0, File v5.2.1.0 allows attackers to escalate privileges via sending crafted IOCTL 0x80002008 requests.
https://www.entechtaiwan.com/dev/port/index.shtm
https://gist.github.com/lleekkoo/6c73fa4e137aca6f5dfe6aec4f6a7b29