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TechRadar
TechRadar
Sead Fadilpašić

Microsoft's nemesis returns: Nightmare Eclipse is back with a new zero day which could be bad news for Windows users

Fingertip pressing keyboard key with Windows logo on it.
  • Nightmare Eclipse discloses ShieldBreak, a new Windows privilege‑escalation zero‑day
  • Flaw bypasses a recent patch and works on fully updated Windows 11 systems
  • Researcher’s ongoing exploit spree leaves multiple Windows vulnerabilities still unpatched

Nightmare Eclipse has struck again! The notorious zero-day researcher with a Microsoft grudge disclosed its latest vulnerability, and just as in previous instances, they picked their timing and released their research hours after Microsoft published its August Patch Tuesday cumulative update in order to maximize the hurt.

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