CryptoPro Secure Disk for BitLocker up to 7.7.3 bootxsa.efi integrity check

CVSS Meta Temp Score
CVSS is a standardized scoring system to determine possibilities of attacks. The Temp Score considers temporal factors like disclosure, exploit and countermeasures. The unique Meta Score calculates the average score of different sources to provide a normalized scoring system.
Current Exploit Price (≈)
Our analysts are monitoring exploit markets and are in contact with vulnerability brokers. The range indicates the observed or calculated exploit price to be seen on exploit markets. A good indicator to understand the monetary effort required for and the popularity of an attack.
CTI Interest Score
Our Cyber Threat Intelligence team is monitoring different web sites, mailing lists, exploit markets and social media networks. The CTI Interest Score identifies the interest of attackers and the security community for this specific vulnerability in real-time. A high score indicates an elevated risk to be targeted for this vulnerability.
8.2$0-$5k0.85+

Summaryinfo

A vulnerability has been found in CryptoPro Secure Disk for BitLocker up to 7.7.3 and classified as very critical. This vulnerability affects unknown code of the file bootxsa.efi. Performing a manipulation results in integrity check. This vulnerability is reported as CVE-2025-59327. The attack requires a local approach. No exploit exists.

Detailsinfo

A vulnerability classified as very critical has been found in CryptoPro Secure Disk for BitLocker up to 7.7.3. This affects an unknown part of the file bootxsa.efi. The manipulation with an unknown input leads to a integrity check vulnerability. CWE is classifying the issue as CWE-354. The product does not validate or incorrectly validates the integrity check values or "checksums" of a message. This may prevent it from detecting if the data has been modified or corrupted in transmission. This is going to have an impact on confidentiality, integrity, and availability. The summary by CVE is:

In CPSD CryptoPro Secure Disk for Bitlocker before v7.7.4, bootxsa.efi fails to properly validate LUKS encryption and, if encryption is present, all CryptoPro file integrity checks are skipped.

It is possible to read the advisory at cpsd.at. This vulnerability is uniquely identified as CVE-2025-59327 since 09/12/2025. The exploitability is told to be easy. Attacking locally is a requirement. Additional levels of successful authentication are required for exploitation. Technical details of the vulnerability are known, but there is no available exploit. The pricing for an exploit might be around USD $0-$5k at the moment (estimation calculated on 08/12/2026).

There is no information about possible countermeasures known. It may be suggested to replace the affected object with an alternative product.

Be aware that VulDB is the high quality source for vulnerability data.

Productinfo

Vendor

Name

Version

CPE 2.3info

CPE 2.2info

CVSSv4info

VulDB Vector: 🔒
VulDB Reliability: 🔍

CVSSv3info

VulDB Meta Base Score: 8.2
VulDB Meta Temp Score: 8.2

VulDB Base Score: 8.2
VulDB Temp Score: 8.2
VulDB Vector: 🔒
VulDB Reliability: 🔍

CVSSv2info

AVACAuCIA
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💳💳💳💳💳💳
💳💳💳💳💳💳
VectorComplexityAuthenticationConfidentialityIntegrityAvailability
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VulDB Base Score: 🔒
VulDB Temp Score: 🔒
VulDB Reliability: 🔍

Exploitinginfo

Class: Integrity check
CWE: CWE-354 / CWE-345
CAPEC: 🔒
ATT&CK: 🔒

Physical: Partially
Local: Yes
Remote: No

Availability: 🔒
Status: Not defined
Price Prediction: 🔍
Current Price Estimation: 🔒

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Threat Intelligenceinfo

Interest: 🔍
Active Actors: 🔍
Active APT Groups: 🔍

Countermeasuresinfo

Recommended: no mitigation known
Status: 🔍

0-Day Time: 🔒

Timelineinfo

09/12/2025 CVE reserved
08/12/2026 +334 days Advisory disclosed
08/12/2026 +0 days VulDB entry created
08/12/2026 +0 days VulDB entry last update

Sourcesinfo

Advisory: cpsd.at
Status: Confirmed

CVE: CVE-2025-59327 (🔒)
GCVE (CVE): GCVE-0-2025-59327
GCVE (VulDB): GCVE-100-389007

Entryinfo

Created: 08/12/2026 16:15
Changes: 08/12/2026 16:15 (52)
Complete: 🔍
Cache ID: 216::103

Be aware that VulDB is the high quality source for vulnerability data.

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