CVE-2025-59324 in Secure Disk for BitLocker
Summary
by MITRE • 08/12/2026
CPSD CryptoPro Secure Disk for Bitlocker before v7.7.4 fails to properly validate LUKS encryption and, if encryption is present, all CryptoPro file integrity checks are skipped.
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Analysis
by VulDB Data Team • 08/12/2026
The vulnerability in CPSD CryptoPro Secure Disk for BitLocker versions prior to v7.7.4 represents a critical flaw in cryptographic validation mechanisms that directly impacts the security posture of encrypted storage systems. This issue stems from improper validation of LUKS (Linux Unified Key Setup) encryption parameters within the Windows BitLocker ecosystem, creating a fundamental weakness in the integrity verification process. The flaw specifically affects how the software handles file integrity checks when LUKS encryption is detected, leading to a complete bypass of security measures that should otherwise protect against unauthorized modifications.
The technical implementation error occurs at the validation layer where the system fails to properly authenticate or verify the presence of LUKS encryption before proceeding with cryptographic operations. When LUKS encryption is detected, the software incorrectly assumes that all integrity checks are already satisfied and proceeds to skip these critical verification steps entirely. This behavior violates fundamental security principles and creates a pathway for malicious actors to manipulate encrypted files without detection. The vulnerability manifests as a lack of proper cryptographic validation that should occur during the encryption process, allowing for potential tampering with encrypted data while maintaining the appearance of secure operation.
From an operational impact perspective, this vulnerability compromises the core security guarantees provided by both BitLocker and CryptoPro encryption frameworks. The failure to perform file integrity checks means that any modifications to encrypted files can go undetected, potentially allowing attackers to introduce malicious content or alter existing data without triggering security alerts. This creates a false sense of security for users who believe their data is protected by robust cryptographic measures, while simultaneously leaving critical gaps in the protection chain. The vulnerability essentially renders the encryption process vulnerable to integrity attacks that should have been prevented through proper validation mechanisms.
The flaw aligns with CWE-284 Access Control Bypass and can be mapped to ATT&CK technique T1566 Credential Access through the exploitation of cryptographic validation weaknesses. Organizations relying on this software for data protection are exposed to significant risks including potential data breaches, unauthorized access to sensitive information, and compromised integrity of encrypted storage systems. The vulnerability is particularly concerning in enterprise environments where BitLocker and CryptoPro integration is used for compliance with security standards such as NIST SP 800-145 and ISO/IEC 27001.
Mitigation strategies should include immediate deployment of CPSD CryptoPro Secure Disk version 7.7.4 or later, which addresses the validation error through proper LUKS encryption detection and integrity check implementation. Organizations should also conduct comprehensive security assessments of existing encrypted systems to identify any potential compromise, implement additional monitoring for unauthorized file modifications, and consider alternative encryption solutions that provide more robust integrity verification mechanisms. Security teams must ensure that all encryption implementations undergo thorough testing for cryptographic validation before deployment to prevent similar vulnerabilities from compromising data protection strategies.