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Dark Reading
Nearly a dozen vulnerable and now revoked UEFI shim bootloaders remained trusted for years, giving attackers a path to bypass Secure Boot.
Bleeping Computer
Microsoft used its AI-powered Security Copilot to discover 20 previously unknown vulnerabilities in the GRUB2, U-Boot, and Barebox open-source bootloaders. [...]
Bleeping Computer
Some signed third-party bootloaders for the Unified Extensible Firmware Interface (UEFI) used by Windows could allow attackers to execute unauthorized code in an early stage of the boot process, before the operating system loads. [...]