Microsoft Defender RoguePlanet Zero-Day Grants SYSTEM Access on Updated Windows

**RoguePlanet** is a publicly disclosed Microsoft Defender zero-day race-condition that enables local privilege escalation to SYSTEM; a PoC was released by an anonymous researcher (Chaotic Eclipse/Nightmare-Eclipse) and no patch was available at disclosure, creating broad exposure across Windows systems. The report details impact, detection and mitigation recommendations, and discusses the ethics of full-disclosure PoC releases.