Defend Against YellowKey: BitLocker Bypass Fix

Defend Against YellowKey: BitLocker Bypass Fix CVE-2026-45585 — dubbed “YellowKey” — is a zero-day BitLocker security feature bypass that Microsoft confirmed on May 20, 2026. It carries a CVSS score of 6.8 (Medium-High), but the real-world risk for organizations handling sensitive data on Windows endpoints is substantially higher. This isn’t a remote exploit.

Key Takeaways

1. Defend Against YellowKey: BitLocker Bypass Fix CVE-2026-45585 — dubbed “YellowKey” — is a zero-day BitLocker security feature bypass that Microsoft confirmed on May 20, 2026.

2. It’s a physical-access attack that allows an adversary with brief unsupervised access to a device to bypass BitLocker’s encryption and extract the drive contents.

3. No CVE-mapped patch exists as of publication.

Bottom Line

Defend Against YellowKey: BitLocker Bypass Fix is a signal worth watching in 2026. If you're building or securing infrastructure, keep an eye on this trend.

Read the full analysis on Susiloharjo.