CVE-2025-59327

Integrity-check bypass via faulty LUKS validation

Published Aug 12, 2026 · Updated Aug 12, 2026

Integrity-check bypass in CPSD CryptoPro Secure Disk for BitLocker before 7.7.4 allows attackers to evade pre-boot file validation. bootxsa.efi treats the presence of LUKS encryption as sufficient and skips every CryptoPro file-integrity check instead of validating the encrypted state. The LUKS condition must be present; published sources do not disclose how attackers can create it or which modified files can affect the subsequent boot.

CVSS severity7.5
High
EPSS probability0.15%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

Integrity-check bypass in CPSD CryptoPro Secure Disk for BitLocker before 7.7.4 allows attackers to evade pre-boot file validation. bootxsa.efi treats the presence of LUKS encryption as sufficient and skips every CryptoPro file-integrity check instead of validating the encrypted state. The LUKS condition must be present; published sources do not disclose how attackers can create it or which modified files can affect the subsequent boot.

The record

CVE
CVE-2025-59327
Published
Aug 12, 2026
Updated
Aug 12, 2026
Vendor
Unknown vendor
Product
Unknown product
Classifications
CWE-347, T1553
Attack vector
Unavailable
Privileges
Unavailable

Timeline

How it unfolded

  1. Aug 12, 2026CVE publishedPublication date reported by the CVE source.
  2. Aug 12, 2026Record updatedLatest update available in the CVE record.

Exploitability

Present is not the same as exploitable

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Is a vulnerable build present?

Affected buildAffected product and version details are unavailable.

What conditions does exploitation require?

Attack vectorUnavailable in this record.
Required privilegesUnavailable in this record.

What is affected?

Affected products and versions are unavailable in this record.

Published CVSS scores

7.5CISA-ADPCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N

CVSS describes severity. EPSS estimates exploitation probability.

Attacks

What attackers are doing with it

Daily unique IPs observed by Shadowserver honeypots for known exploited vulnerabilities (KEVs). Missing observations do not establish an absence of attacks.

Daily unique IPsNo honeypot observations are available for this CVE in the selected window.

No observations available

Sep 10, 2026Sep 16, 2026
Latest reporting daySep 16, 2026
Latest daily unique IPsUnavailable
Prior 30-day averageUnavailable
SourceShadowserver honeypots (KEV)
VectorUnavailable
PrivilegesUnavailable
Known exploitationUnconfirmed
Public exploitUnconfirmed

Weakness, pattern, technique

CWE-347Improper Verification of Cryptographic Signature
T1553Subvert Trust Controls

Public exploit references

No public exploit references are available in this record.

Labels summarize the accepted research assessment. They do not indicate a test against your environment.

Technologies

Your stack

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Your stack

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