The zero-day "nightmare" apparently isn't over for Microsoft, as a disgruntled researcher who's been feuding with the company for the past three months has dropped yet another proof-of-concept (PoC) ...

Nightmare Eclipse Zero-Days: Three zero-day vulnerabilities disclosed by Nightmare Eclipse, complete with exploit code, were patched in the June 2026 update. RoguePlanet Release: Nightmare Eclipse ...

Cybersecurity researcher and current Microsoft nemesis, Nightmare-Eclipse, has released a new pair of zero-day Windows exploits following this week's Patch Tuesday, which had patched the last of ...

Microsoft on Tuesday released fixes for two high-severity zero-days that were disclosed by a researcher who has been locked in a testy beef with the software giant.

Microsoft is trying to fix the RoguePlanet zero-day vulnerability impacting Defender on Windows 11 and Windows 10.

CISA confirmed on Monday that ransomware gangs are now exploiting a Microsoft Defender privilege escalation vulnerability, dubbed BlueHammer, that has previously been abused in zero-day attacks.

GitHub user Nightmare-Eclipse has just published two new vulnerabilities called YellowKey and GreenPlasma that affect Windows 11 systems. They were both released on May 12, the same day that Microsoft ...