Microsoft's Original Windows Secure Boot Certificate Is Expiring
ID: b2855a7f-cb2a-5dc4-9421-bee8802d051f
STIX ID: report--b2855a7f-cb2a-5dc4-9421-bee8802d051f
Feed Name: Dark Reading
Threat Score
Microsoft warns that the original 2011 UEFI Secure Boot certificates used by many Windows PCs will start expiring on June 24; devices that do not receive the updated 2023 certificates may lose Secure Boot protections and the ability to accept future DB/DBX updates, increasing exposure to UEFI bootkits. Microsoft urges IT teams to inventory endpoints, apply the updated certificates, confirm OEM firmware prerequisites, and use the Windows Security app indicator and its playbook to ensure ongoing device boot integrity.
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