ESET found 11 Microsoft-signed UEFI shims, some over a decade old, that let attackers bypass Secure Boot without a single new exploit.

11 Old Signed UEFI Shims Just Broke Secure Boot on Millions of PCs on Latest Hacking News | Cyber Security News, Hacking Tools and Penetration Testing Courses.

Rebecca Sutton

Source: LatestHackingNews
Source Link: https://latesthackingnews.com/2026/07/15/uefi-secure-boot-bypass/