Windows: critical Secure Boot flaw allows arbitrary code execution

A Windows vulnerability allows attackers to bypass Secure Boot and execute arbitrary code on affected systems.

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The fact

The flaw was analyzed on June 15 by Vigilance.fr security researchers, posing a major risk to Windows devices.

Microsoft is expected to release a patch to reduce user exposure.

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Auto-synthesis from 1 media source · identified on June 15, 2026