This is the latest zero-day released by security researcher Nightmare Eclipse, despite Microsoft publicly threatening to take legal action against them.

The PoC posted by Nightmare Eclipse, who has been feuding with Microsoft for months, grants an attacker system-level privileges once they gain any access.

An underlying service required for XBOX Home Console sharing and Game Pass purchased content, as well as some PC scenarios, experienced an outage whereby an update to the system put some services in ...

Nightmare Eclipse has released a new Microsoft Defender zero-day exploit named "ShieldBreak" after Microsoft released the August 2026 Patch Tuesday security updates.

Microsoft has patched 421 CVEs on August 2026 Patch Tuesday, including an elevation of privilege flaw exploited as a zero-day.

The Failed to create DX11 render device error means the application tried to create a DirectX 11 graphics device, but Windows or the graphics driver rejected the ...

The 'ShieldBreak' flaw can let an attacker use Windows Defender to escalate their privileges on the OS. Microsoft previously threatened legal action against the researcher, Nightmare Eclipse.