Zero-dayJul 9, 2026
Microsoft Reins in RoguePlanet Zero-Day Threat
Researcher 'Nightmare-Eclipse' releases PoC for Windows Defender zero-day.
Summary
A researcher identified as 'Nightmare-Eclipse' has released a proof-of-concept exploit for a previously unknown zero-day vulnerability affecting Windows Defender. This follows the researcher's pattern of disclosing multiple Microsoft zero-days in early June.
Indicators of Compromise
- malware — RoguePlanet
Entities
Windows Defender (product)Microsoft (vendor)Nightmare-Eclipse (threat_actor)