Security researcher Chaotic Eclipse has disclosed a proof-of-concept exploit called ShieldBreak, which bypasses Microsoft Defender's patch for CVE-2026-50656 (RoguePlanet), a vulnerability with a CVSS score of 7.8. The zero-day exploit demonstrates a method to circumvent existing security patches and potentially gain SYSTEM-level access on Windows systems.
The security researcher going by the name Chaotic Eclipse (aka INFINITE NIGHTMARE, MSNightmare, and Nightmare-Eclipse) has released a proof-of-concept (PoC) for a new Microsoft zero-day called ShieldBreak. The vulnerability, rooted in Microsoft Defender for Windows, demonstrates a patch bypass for CVE-2026-50656 (CVSS score: 7.8), otherwise known as RoguePlanet. RoguePlanet has been described
Originally published at thehackernews.com
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