{"uuid": "1d12820d-db36-4e56-a5db-e1d376d56006", "vulnerability_lookup_origin": "1a89b78e-f703-45f3-bb86-59eb712668bd", "author": "9f56dd64-161d-43a6-b9c3-555944290a09", "vulnerability": "CVE-2026-50656", "type": "published-proof-of-concept", "source": "https://t.me/pphm_HackerNews/2591", "content": "\ud83d\udd34 ShieldBreak Zero-Day PoC Claims Microsoft Defender Patch Bypass With SYSTEM Access\n\nThe 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.\n\nThe vulnerability, rooted in Microsoft Defender for Windows, demonstrates a patch bypass for CVE-2026-50656 (CVSS score: 7.8), otherwise known as RoguePlanet.\n\nRoguePlanet has been described as a race condition that, if successfully exploited, could grant an attacker the ability to spawn a shell with SYSTEM-level privileges, enabling them to run arbitrary code or perform unauthorized actions.", "creation_timestamp": "2026-08-23T00:00:47.839491Z"}