Earlier this week, Microsoft released KB5120249, a critical security update for Windows 10 versions 22H2 and 21H2, as well as ...

As part of August’s Patch Tuesday, Microsoft released security updates that address 398 new vulnerabilities. Alongside ...

Nightmare Eclipse has dropped ShieldBreak, a Windows zero-day exploit that allows any user to gain System privileges.

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

A security researcher disclosed a critical Windows vulnerability enabling system-wide access, defying Microsoft's prior legal warnings over revealing undisclosed software flaws.

Nightmare Eclipse has released a proof of concept called ShieldBreak, a zero-day flaw in Defender that allows privilege escalation to SYSTEM with no patch yet available. The exploit bypasses Microsoft ...

Microsoft addresses around 400 security issues in Azure, Office, Windows & more. Several vulnerabilities are considered critical.

The ShieldBreak exploit starts after code is already running under a limited Windows account, then seeks SYSTEM, the operating system’s highest local privilege. Nightmare Eclipse says the exploit ...

Nightmare Eclipse, the serial zero-day hunter who has an axe to grind with Microsoft, published a new Defender zero-day, ShieldBreak, that apparently bypasses Redmond’s RoguePlanet patch ...

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 released security patches to address a Windows zero-day vulnerability known as "LegacyHive," disclosed after the July 2026 Patch Tuesday. The security flaw was disclosed by a security ...