ShieldCrash Exploit Targets Microsoft Defender Vulnerability Management

A zero-day exploit named ShieldCrash has been released by security researcher Nightmare Eclipse, targeting Microsoft Defender's vulnerability management.

The exploit, which affects Windows 10, Windows 11, and Windows Server systems, allows attackers to gain SYSTEM privileges and trick Microsoft Defender into reading arbitrary files as SYSTEM.

This is significant because Nightmare Eclipse claims that Microsoft did not fully resolve the underlying ShieldBreak vulnerability, which was patched in September's Patch Tuesday updates.

The researcher alleges a dispute over bug bounty payouts contributed to the exploit's release, highlighting the risk of incomplete patches and the importance of continuous security updates.