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TechRadar
TechRadar
Sead Fadilpašić

Microsoft says it's hard at work on a patch for this worrying Defender zero-day

View of Microsoft Romania headquarters in City Gate Towers situated in Free Press Square, in Bucharest, Romania.
  • Microsoft confirms RoguePlanet as CVE‑2026‑50656, an elevation‑of‑privilege flaw in Defender’s Malware Protection Engine
  • Disclosed by Chaotic Eclipse as a race‑condition zero‑day granting SYSTEM privileges on fully patched Windows 10/11
  • Seventh exploit in their campaign; PoC validated by ThreatLocker, with Microsoft promising a fix despite ongoing feud

Microsoft has assigned a unique identifier for the recently-disclosed RoguePlanet vulnerability and confirmed it is now working on a fix.

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