Microsoft working on Defender patch for ShieldBreak zero-day
Microsoft is working on a security patch for the "ShieldBreak" zero-day vulnerability disclosed last week by security researcher "Nightmare Eclipse" and now tracked as CVE-2026-69414.
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New Microsoft Defender 'ShieldBreak' zero-day grants SYSTEM privileges
Nightmare Eclipse has released a new Microsoft Defender zero-day exploit named "ShieldBreak" after Microsoft released the August 2026 Patch Tuesday security updates.