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#4 The Hacker News general June 10, 2026 at 05:22 UTC

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

By [email protected] (The Hacker News)

AI Summary

Anonymous researcher Nightmare-Eclipse (also known as Chaotic Eclipse, now operating as 'MSNightmare' on GitHub) released a PoC exploit called RoguePlanet targeting a race condition in Microsoft Defender that achieves SYSTEM-level privilege escalation on fully updated Windows systems. The researcher reports achieving 100% success rate on tested systems despite the race condition nature of the exploit. This continues an ongoing public feud with Microsoft, with multiple Defender zero-days dropped in succession.

Read full article → https://thehackernews.com/2026/06/microsoft-defend…

Relevance score: 87.0/100

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