Security readout for executives and security teams
Plain-English summary
Affected encrypted systems may silently bypass CryptoPro’s file-integrity checks during boot. That weakens a control intended to detect unauthorized file changes. The issue affects CPSD CryptoPro Secure Disk for BitLocker versions before 7.7.4 when LUKS encryption is present.
Executive priority
Prioritize remediation as high, particularly on systems relying on CryptoPro integrity checks to protect sensitive data. Schedule prompt upgrades, but avoid declaring an emergency solely from the supplied evidence because active exploitation is not established and practical attack prerequisites remain unclear.
Technical view
CVE-2025-59327 concerns improper validation by bootxsa.efi. When it detects LUKS encryption, the component skips all CryptoPro file-integrity checks. It is classified as CWE-347 and scored CVSS 3.1 7.5, although the supplied record does not explain how the network attack vector maps to the boot process.
Likely exposure
Exposure is limited to deployments running CPSD CryptoPro Secure Disk for BitLocker earlier than 7.7.4, specifically where LUKS encryption is present. The supplied structured affected-product data is incomplete, listing vendor and product as unavailable, so asset identification should confirm the exact installed product and version.
Exploitation context
The supplied sources do not establish active exploitation, and this CVE is not identified as being in KEV. They also do not describe observed attacks, public exploit availability, required access, or a demonstrated attack chain. Treat the CVSS network vector cautiously until vendor guidance clarifies practical reachability.
Researcher notes
The core failure is a validation error that disables integrity checking when LUKS is present. The supplied CVSS vector claims remote, unauthenticated exploitation with high confidentiality impact, but supporting mechanics are absent. Product metadata is also incomplete. Researchers should reconcile these points against the vendor material without assuming additional affected products or attack paths.
Mitigation direction
- Upgrade affected CPSD installations to version 7.7.4 or later.
- Review CPSD vendor guidance for any additional boot-component replacement or configuration requirements.
- Prioritize systems where LUKS encryption is present and CryptoPro integrity enforcement is security-critical.
- Apply compensating file-integrity monitoring until affected installations are upgraded.
Validation and detection
- Inventory CPSD installations and record their exact versions.
- Identify affected systems that use LUKS encryption.
- Confirm upgraded systems report version 7.7.4 or later.
- Verify CryptoPro integrity checks execute successfully during the relevant boot workflow.
- Review vendor advisories for authoritative verification procedures.
Public sources used
Generated from the cited source records. This long-tail analysis has not been individually reviewed by a named human.
Conservative CVE-to-ATT&CK context
These mappings and lookup hints may be relevant to the vulnerability behavior, CWE, affected product, or exposure path. Glexia-inferred context is not an official MITRE, ATT&CK, CWE, or CVE Program mapping.
ATT&CK lookup starting points
Use these exact CWE pages and searches to review the Glexia ATT&CK library from this CVE's weakness and description context.
CWE-347: Exact CWE lookup
Use the exact CWE identifier as the starting point before reviewing related ATT&CK behavior. Open the exact CWE lookup page first, then review the ATT&CK searches from that MITRE weakness context. This is a Glexia lookup hint, not an official ATT&CK mapping.
Open ATT&CK lookupCVE-2025-59327 mapping review
Open the CVE-to-ATT&CK bridge for reviewed, inferred, or future official mappings tied to this CVE.
Open ATT&CK lookup- Severity
- High
- CVSS
- 7.5 (3.1)
- Known Exploited
- No
- Published
Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N
CNA and ADP enrichment extracted from CVE v5
These fields come from the CVE record and ADP containers, not from Glexia's Take. They preserve time-varying source decisions such as CISA SSVC, KEV status, CVSS metrics, and provider references.
SSVC decision data
CVSS vector scores
1 official scoreWe collect every scored CVSS vector available in the official CNA and ADP containers. When more than one version is present, the table keeps the source vectors side by side instead of collapsing them into the highest score.
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N3.93.6CISA-ADPVulnerability scoring details
Base CVSS 3.1 score
7.5HighVector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N
Vulnerability timeline
Timeline events are normalized from CVE metadata, CNA source timelines, ADP timelines, and KEV metadata when present.
- CVE reservedCVE Program
The CVE ID was reserved by the assigning CNA.
- CVE publishedCVE Program
The CVE record was published.
- CVE updatedCVE Program
The CVE record metadata indicates this as the latest update time.
ADP provider summaries
Source materials
- CVE List V5 sourceCVE List V5
- https://www.cpsd.at/blog/CVE reference, mitre
- https://i.blackhat.com/BH-USA-26/Presentations/US-26-Burch-The-Cost-of-Obscurity-Wednesday.pdfCVE reference, mitre
- https://i.blackhat.com/BH-USA-26/Presentations/US-26-Burch-The-Cost-of-Obscurity-wp.pdfCVE reference, mitre
Products and packages named in the record
CWE details
CWE links open Glexia weakness intelligence pages with official CWE context, developer remediation guidance, and related CVE mappings.
Improper Verification of Cryptographic Signature
Improper Verification of Cryptographic Signature represents a recurring weakness pattern that can create exploitable paths when design, validation, or implementation controls are missing.