Microsoft Defender 'RoguePlanet' zero-day exploit grants SYSTEM privileges on Windows 10 and 11
By
BleepingComputer
The kind of bagel that ruins lesser bagels for you.
Summary
Security researcher Nightmare Eclipse has released "RoguePlanet," a zero-day exploit targeting Microsoft Defender that grants SYSTEM-level privileges on fully patched Windows 10 and Windows 11 systems. The disclosure follows a series of disputed Windows zero-day releases and comes after Microsoft patched two other flaws during the June 2026 Patch Tuesday update.
Key quotes
· 2 pulledA security researcher known as Nightmare Eclipse has released 'RoguePlanet,' a new Microsoft Defender zero-day exploit that can spawn a command prompt with SYSTEM privileges on fully patched Windows 10 and Windows 11 devices.
The disclosure follows a series of disputed Windows zero-day releases and comes after Microsoft patched two other flaws during the June 2026 Patch Tuesday update.
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