ShieldCrash Exploit Bypasses Microsoft Defender Patches
A new exploit called ShieldCrash has been discovered, targeting fully patched Windows systems for privilege escalation. The researcher behind the exploit says it bypasses Microsoft's fixes for ShieldBreak, which was itself a bypass for an earlier vulnerability known as RoguePlanet.
The ShieldCrash exploit allows arbitrary file reads and potential access to the SAM database. Security experts warn that successive bypasses suggest deeper flaws in Defender's underlying attack surface that require broader redesign.
They advise monitoring Defender updates, tightening admin controls, and watching for suspicious processes tied to Defender mechanisms. The researcher who discovered ShieldCrash is known as Nightmare Eclipse, but their name is not directly associated with a specific company or project.