Published Jul 15, 2026, 7:07 AM ET · Updated 4 months ago · 2 sources

Researcher Drops New Windows Zero-Day PoC Hours After Microsoft Patch Tuesday

The Hacker News
The Hacker News
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Original Report

Security researcher Chaotic Eclipse (aka Nightmare-Eclipse) has released a new proof-of-concept (PoC) exploit called LegacyHive. It has been described as a Windows User Profile Service arbitrary hive load elevation of privileges vulnerability. The Windows User Profile Service, also referred to as ProfSvc, is a core system component that manages user accounts and environments. "The PoC requires