Microsoft has released a critical security update for vulnerability CVE-2026-45585, dubbed YellowKey. This flaw allowed attackers with physical or remote access to bypass BitLocker protection, exposing encrypted data by exploiting errors in recovery key management. The company urges immediate application of the patch.
The exploit attacks recovery key management 🔑
YellowKey exploits a weakness in the BitLocker recovery key validation process, allowing an attacker to unlock protected drives without the original password. The flaw affects multiple versions of Windows. In addition to the patch, Microsoft recommends enabling multifactor authentication and reviewing BitLocker group policies to mitigate the risk of unauthorized access.
YellowKey: when the spare key opens the door wide open 🚪
It turns out that the BitLocker recovery feature, designed to help you when you forget your password, becomes the attacker's best friend. It's like having a spare key under the doormat, but with a neon sign saying here it is. Good thing Microsoft has already put the digital lock in place, though it might be time to reconsider where we store those backup copies.