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 New Microsoft Defender 'ShieldCrash' zero-day grants SYSTEM access

An anonymous security researcher known as Nightmare Eclipse has released a new Microsoft Defender zero-day exploit named "ShieldCrash" right after Microsoft rolled out its September 2026 Patch Tuesday security updates. [...]

https://www.bleepingcomputer.com/news/security/new-microsoft-defender-shieldcrash-zero-day-grants-system-access/
BleepingComputer New Microsoft Defender 'ShieldCrash' zero-day grants SYSTEM access An anonymous security researcher known as Nightmare Eclipse has released a new Microsoft Defender zero-day exploit named "ShieldCrash" right after Microsoft rolled out its September 2026 Patch Tuesday security updates.
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