BitLocker Bypass Allows Access to Encrypted Drives

Because of course it does. Windows BitLocker 0-Day Vulnerability Enables Access to Encrypted Drives

Two new unpatched Windows BitLocker zero-day vulnerabilities significantly compromise Microsoft’s ecosystem. The exploits include a critical BitLocker encryption bypass called YellowKey and a privilege escalation flaw named GreenPlasma.

YellowKey is a bypass. BitLocker hasn't been broken. Windows can be fooled into letting you in through the side door.

GreenPlasma isn't less scary, but maybe I will get to that later.

YellowKey is a critical exploit that allows threat actors with physical access to entirely bypass BitLocker full-disk encryption in minutes. The vulnerability resides within the Windows Recovery Environment (WinRE) and exclusively impacts Windows 11, Windows Server 2022, and Windows Server 2025.

This is the Dave's Garage video Yellow Key: BitLocker has been Broken! Don't lose your laptop!

If you encrypt your laptop or desktop with BitLocker, you're about to be very surprised, and more than a little frightened because every once in a while, a security bug comes along that doesn't feel like a clever exploit so much as finding a labeled spare key under the front door mat.

Don't lose access to your laptop, for even a minute.

The video is short, by Dave's Garage standards, at less than 2 and a half minutes.