UEFI Shell Flaws Let Hackers Disable Secure Boot on Over 200,000 Laptops

Security researchers have uncovered critical vulnerabilities in signed UEFI shells that allow attackers to completely bypass Secure Boot protections on approximately 200,000 Framework laptops and desktops.

These flaws expose a fundamental weakness in firmware security that could enable persistent, undetectable malware infections at the most privileged system level.

The vulnerabilities center around legitimate diagnostic tools that have been signed with trusted Microsoft certificates.

While these UEFI shells serve valid purposes for system administrators and firmware developers, they contain dangerous functionality that can disable core security protections.

Unlike traditional backdoors planted by malicious actors, these are authorized components that attackers can exploit to subvert the entire boot security chain.