BitUnlocker Downgrade Attack Bypasses Windows 11 Disk Encryption in Minutes

A proof-of-concept (PoC) exploit that demonstrates how attackers can bypass Windows 11 BitLocker disk encryption in under 5 minutes. Dubbed the “BitUnlocker” attack, this physical downgrade technique exploits a known vulnerability, CVE-2025-48804. Initially documented by the Microsoft STORM team in July 2025, the flaw exposes a critical weakness in how Secure Boot interacts with legacy […]

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