Earlier this week, Microsoft patched three zero-day exploits published by security researcher "Chaotic Eclipse" (also known as Nightmare-Eclipse) last month, including YellowKey, GreenPlasma, and MiniPlasma (via Bleeping Computer).
For context, the YellowKey vulnerability allowed the security sleuth to access BitLocker-protected drives on Windows 11 with a simple USB key. Perhaps more concerningly, Nightmare claimed that Microsoft "intentionally" left a backdoor in the security feature.