Lenovo is warning about high-severity BIOS flaws that could allow attackers to potentially bypass Secure Boot in all-in-one desktop PC models that use customized Insyde UEFI (Unified Extensible Firmware Interface). […]
from https://www.bleepingcomputer.com/news/security/new-lenovo-uefi-firmware-updates-fix-secure-boot-bypass-flaws/