GreatXML BitLocker 0-Day Bypass Exploited Through Defender Offline Scan

A newly disclosed zero-day vulnerability dubbed “GreatXML” allows attackers to completely bypass BitLocker encryption on Windows machines , and the attack vector is one few would suspect: Microsoft Defender’s own Offline Scan feature. The vulnerability was discovered by security researcher NightmareEclipse, who went from initial observation to a working proof of concept in only four hours. The researcher has published full technical details, including GitHub…