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Microsoft Defender 'RoguePlanet' zero-day grants SYSTEM privileges

📅 9 June 2026 at 23:11 UTC📰 Bleeping ComputerView original source ↗
Microsoft Defender 'RoguePlanet' zero-day grants SYSTEM privileges

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🤖 AI BriefingAuto-generated threat analysis
🔍Threat Overview

A new Microsoft Defender zero-day exploit, 'RoguePlanet', was released by a security researcher, Nightmare Eclipse, allowing attackers to spawn a command prompt with SYSTEM privileges via a race condition vulnerability in fully patched Windows 10 and Windows 11 devices.

⚙️Technical Details
Affected Systems
Windows 10Windows 11
Attack Vectors
Microsoft Defender race condition vulnerability
💥Impact Assessment
Severity: High
Who Is at Risk
Organizations using fully patched Windows 10 and Windows 11 devices
🛡️Recommended Actions
1Implement application allowlisting to prevent the exploit from executing
2Monitor systems for suspicious activity related to Microsoft Defender
3Ensure SMB share settings are configured securely
📦Affected Products
Microsoft Defender

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