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How the CVE Works:
CVE-2025-48804 exploits a flaw in Windows BitLocker’s data validation mechanism, where untrusted input is improperly accepted alongside trusted data during the encryption process. An attacker with physical access can manipulate this weakness to bypass BitLocker’s authentication, gaining unauthorized access to encrypted drives. The vulnerability stems from insufficient validation of external data sources, allowing maliciously crafted input to trick BitLocker into granting decryption without proper credentials.
DailyCVE Form:
Platform: Windows BitLocker
Version: Pre-patch builds
Vulnerability: Security bypass
Severity: Critical
Date: 07/15/2025
Prediction: Patch by 08/2025
What Undercode Say:
Analytics:
Get-BitLockerVolume | Select-Object MountPoint, ProtectionStatus
// PoC snippet triggering improper validation
void exploit_trusted_data_injection() {
inject_malicious_header(encrypted_drive);
}
How Exploit:
Physical access required. Attacker inserts modified bootloader or USB device to inject untrusted data during BitLocker unlock.
Protection from this CVE:
Apply Microsoft’s pending patch. Disable external boot devices. Enforce TPM+PIN pre-boot auth.
Impact:
Full disk encryption bypass. Data theft. Loss of confidentiality.
Sources:
Reported By: nvd.nist.gov
Extra Source Hub:
Undercode
