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How the CVE Works
CVE-2025-48001 exploits a Time-of-Check Time-of-Use (TOCTOU) race condition in Windows BitLocker. An attacker with physical access can manipulate the system during the brief window between when BitLocker verifies the boot integrity (Time-of-Check) and when it enforces encryption (Time-of-Use). By interrupting the process or altering boot components mid-execution, the attacker can bypass BitLocker’s encryption, gaining unauthorized access to encrypted data. This vulnerability requires physical interaction but poses a critical risk due to the high-value data protected by BitLocker.
DailyCVE Form
Platform: Windows
Version: 10, 11, Server 2019/2022
Vulnerability: TOCTOU Race Condition
Severity: Critical
Date: 07/15/2025
Prediction: Patch by 08/30/2025
What Undercode Say
Analytics:
Get-BitLockerVolume | fl wmic.exe /namespace:\root\cimv2\security\microsoftvolumeencryption path win32_encryptablevolume
How Exploit
1. Boot from external media.
2. Interrupt BitLocker verification.
3. Replace bootloader during TOCTOU gap.
Protection from this CVE
1. Disable USB boot if unused.
2. Apply Microsoft’s upcoming patch.
3. Use TPM+PIN authentication.
Impact
Data theft, system compromise.
Sources:
Reported By: nvd.nist.gov
Extra Source Hub:
Undercode
