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Microsoft releases Windows 10 KB5075912 extended security update

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Microsoft has released the Windows 10 KB5075912 extended security update to address vulnerabilities, including six zero-days, and to continue rolling out replacements for expiring Secure Boot certificates. This update is available for Windows 10 Enterprise LTSC and ESU program participants. It fixes several known issues, including a problem preventing devices from shutting down or hibernating if System Guard Secure Launch is enabled. The update also includes changes to Chinese fonts to meet GB18030-2022A compliance and addresses a stability issue affecting certain GPU configurations. Microsoft has been warning about the expiration of multiple Windows Secure Boot certificates since June 2025, which could allow threat actors to bypass security protections if not updated. This update continues the phased rollout of new Secure Boot certificates to targeted systems.

Timeline

  1. 10.02.2026 21:06 1 articles · 4h ago

    Microsoft releases Windows 10 KB5075912 extended security update

    Microsoft has released the Windows 10 KB5075912 extended security update to fix February 2026 Patch Tuesday vulnerabilities, including six zero-days, and to continue rolling out replacements for expiring Secure Boot certificates. The update addresses several known issues, including a problem preventing devices from shutting down or hibernating if System Guard Secure Launch is enabled. It also includes changes to Chinese fonts and GPU stability fixes.

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