Old UEFI shim bootloaders could be abused to bypass Secure Boot on any UEFI-based machine, regardless of the operating system ...

Attackers could bypass UEFI Secure Boot on a wide range of systems thanks to 11 Microsoft-signed UEFI shim bootloaders ...

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

Certain older devices that cannot receive updates via their OEM may not be able to install the latest Secure Boot certificate ...

The older Secure Boot Certificates are expiring in June and October 2026. Microsoft has shared a timeline on its official websites showing which certificates are expiring in June and October 2026. The ...

With Microsoft’s 2011 Secure Boot certificates now expired or expiring in stages, every major PC manufacturer has published dedicated guidance for their customers. HP, Dell, ASUS, Lenovo, MSI, Acer, ...

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Microsoft has pushed the Secure Boot 2023 certificate update to all eligible Windows 11 and Windows 10 PCs, hours before the first expiration deadline hits on June 24, 2026. We have received a ...

Certificate Expiration: The KEK CA 2011 certificate expired on June 24, 2026, stopping unpatched systems from receiving new Secure Boot revocations. Trust Chain Preservation: The update replaces 2011 ...

Secure Boot, a feature first launched in 2011 with Windows 8, included an initial wave of certificates that are set to expire starting on June 24th. We've covered this before, but Microsoft is ...

Microsoft is urging Windows 11 users to update their Secure Boot certificates as the older 2011 version approaches expiration next month. The company is pushing systems to move to the newer 2023 ...

Microsoft is about to make a significant upgrade to its Secure Boot system, and if enterprise customers have not gotten started on the upgrade, they are already behind. Secure Boot is a Windows ...