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V ServerApplication · Fujielectric

CVE-2023-47586

HIGH · 7.8 CVSS v3.1 Published 2023-11-15
Fix available
A fix is available. Upgrade to after 4.0.18.0 or later.
See remediation →
81/100
Remediation priority · High
No privileges

Official description Straight from the sourceThe vendor's or NVD's own wording, published unedited. Authoritative, but often terse — it says what broke, rarely what to do.

NVD · unedited
Multiple heap-based buffer overflow vulnerabilities exist in V-Server V4.0.18.0 and earlier and V-Server Lite V4.0.18.0 and earlier. If a user opens a specially crafted VPR file, information may be disclosed and/or arbitrary code may be executed.

Technical summary Written by usOur analysis, written from the advisory, the CVSS vector and the affected-version data. It adds context the advisory leaves out, and never invents facts that are not in the source.

dbcve analysis · high confidence

Multiple heap-based buffer overflow vulnerabilities exist in V-Server V4.0.18.0 and earlier and V-Server Lite V4.0.18.0 and earlier. These vulnerabilities are triggered when a user opens a specially crafted VPR file, allowing potential information disclosure and/or arbitrary code execution due to improper bounds checking during VPR file parsing.

MitigationUpdate V-Server and V-Server Lite to a version beyond V4.0.18.0 when a patched release is available. Until then, avoid opening VPR files from untrusted sources.

Verify against the referenced sources before acting — the references below are authoritative for this CVE, this summary is not.

Affected products & versions What the vendor confirmedThe version ranges the vendor confirmed as vulnerable. If your version sits inside a range here, treat yourself as exposed until you have upgraded.

NVD · CPE data
V ServerApplication
Affected:<= 4.0.18.0

CVSS breakdown How the score is builtThe industry scoring standard. It rates how the flaw is reached, what it takes to exploit, and what an attacker gains — the score is derived from those, not the other way round.

From the vector
Attack vector
Local
Complexity
Low
Privileges
None
User interaction
Required
Scope
Unchanged
Confidentiality
High
Integrity
High
Availability
High

CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H

Am I affected? How to checkSteps we derive from the advisory and the affected-version data, so you can decide whether this CVE reaches your setup. They are a guide, not a scan — your own configuration is the authority.

dbcve checks

Work through these to decide whether this CVE applies to you.

  1. Confirm V-Server or V-Server Lite installation
    Check for the presence of V-Server or V-Server Lite executables or installation directories. Common locations include C:\Program Files\Fujielectric\V-Server or similar paths under Program Files.
    Affected if The software is installed on the system
  2. Identify installed version
    Locate the main executable (often named VSERVER.exe or similar) and check its file properties, or use the application's 'About' or 'Help' > 'Version' menu option to view the version number.
    Affected if The version is 4.0.18.0 or earlier
  3. Verify VPR file association or handling capability
    Check if .vpr file extension is associated with the installed V-Server software, or look for VPR parsing modules within the application directory.
    Affected if VPR files can be opened or parsed by the installed V-Server application
  4. Check for recent VPR file access
    Review Windows event logs, prefetch files, or recent documents for evidence of .vpr files being opened, or check the application's recent files list if available.
    Affected if Users have opened VPR files originating from the installed V-Server application

The environment is affected if V-Server or V-Server Lite version 4.0.18.0 or earlier is installed and can process VPR files.

Generated from the published advisory. Verify against your own configuration.

Check your environment

Paste your version and any relevant configuration and it will be compared against the affected criteria above. Do not include secrets or credentials.

AI-assisted, checked against the advisory. Informational, not a guarantee.

Remediation Closing itWhat it takes to close this. Where a vendor fix exists we point at it; where none exists we say so plainly, and can build one. Effort estimates are scoped from the advisory, not from your codebase.

dbcve · scoped
Upgrade available Upgrade to a release after 4.0.18.0
Interim mitigation

Update V-Server and V-Server Lite to a version beyond V4.0.18.0 when a patched release is available. Until then, avoid opening VPR files from untrusted sources.

Recommended fix Moderate confidence

V-Server V4.0.19.0 or later (or latest available version from vendor)

  1. 1. Identify the installed version of V-Server or V-Server Lite by checking the application properties or About section.
  2. 2. Navigate to the official vendor download page at hakko-elec.co.jp or monitouch.fujielectric.com to obtain the latest version.
  3. 3. Download the updated V-Server version (ensure it is newer than 4.0.18.0).
  4. 4. Backup all existing VPR project files before performing the upgrade.
  5. 5. Close any running instances of V-Server or V-Server Lite.
  6. 6. Install the new version following the vendor's installation instructions.
  7. 7. After installation, verify the version number in the application to confirm the update was successful.
  8. 8. Test that existing VPR files open correctly in the updated version.
Caveat Review release notes for any changes to VPR file format compatibility or feature modifications that may affect existing projects

Generated from the published advisory — verify against the referenced sources before acting.

Fix this in V Server Scoped from the published advisory
  • Consultation2.0 h
  • Implementation1.0 h
  • Testing4.0 h
  • Review / QA2.0 h
9.0 hours of engineering $1,540
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References Go to the primary sourcePrimary sources — vendor advisories, patches and trackers. Where our summary and a reference disagree, the reference wins.

Primary sources

Practitioner notes

Contributed

Peer-ranked notes from engineers who’ve handled CVE-2023-47586 in production — separate from our analysis above.

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What this is

A place for practitioners to share what actually worked: a mitigation you’ve tested, a configuration change, a version- or environment-specific caveat, or a link to a verified patch. The most useful notes rise to the top as peers upvote them, so the signal stays high.

What belongs here
  • Verified mitigations, workarounds, and config changes
  • Version or environment caveats, and links to real fixes
  • No weaponised exploit code, or anything meant to cause harm
  • No spam, self-promotion, credentials, or personal data