highZero-Day
Microsoft Defender 'ShieldCrash' Zero-Day Exploit Publicly Released, Grants SYSTEM Access
A security researcher known as Nightmare Eclipse has publicly released a zero-day exploit named 'ShieldCrash' targeting Microsoft Defender. The exploit reportedly allows local privilege escalation to SYSTEM, potentially leading to full host compromise. The release came shortly after Microsoft's September 2026 Patch Tuesday updates. No patch or official mitigation has been announced, and Microsoft has not yet responded. Active exploitation has not been confirmed.
BleepingComputer1 min read