A zero-day vulnerability in Microsoft Defender lets attackers gain full system access on up-to-date Windows 10 and 11 PCs. No ...

Microsoft has confirmed CVE-2026-50656, the RoguePlanet Defender zero-day that can grant SYSTEM privileges on Windows 10 and ...

Microsoft has acknowledged the RoguePlanet zero-day exploit and is working on a high-quality patch to resolve the ...

Update: Added statement from Microsoft to the end of this article. A security researcher has released a new Microsoft Defender zero-day exploit named "RoguePlanet" just hours after Microsoft fixed two ...

A new Windows zero-day reportedly bypasses BitLocker, adding pressure on Microsoft as researchers debate the exploit’s real-world impact.

The long-running feud between Microsoft and security researcher Nightmare Eclipse has entered a new chapter. Eclipse, who has spent the past several months publicly releasing unpatched Windows ...

A new Microsoft Defender zero-day called RoguePlanet reportedly grants SYSTEM privileges on fully patched Windows 10 and Windows 11 devices.

Microsoft released security fixes for more than 200 vulnerabilities on June 9, 2026 — the largest single Patch Tuesday in the program's history since its founding in 2003 — while a security researcher ...

RoguePlanet now has a CVE and a patch in the works, a week after the disclosure of a PoC.

Read how Microsoft Security has advanced its agentic vulnerability detection system, codename MDASH, integrating into ...