dbcve.org
V ServerApplication · Fujielectric

CVE-2023-47585

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
Out-of-bounds read vulnerability exists 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

An out-of-bounds read vulnerability exists in the VPR file parsing functionality of V-Server V4.0.18.0 and earlier (including V-Server Lite). When a user opens a specially crafted malicious VPR file, the parser accesses memory outside allocated buffer boundaries. This memory corruption can lead to information disclosure from process memory and potentially enable arbitrary code execution in the context of the running application.

MitigationUpdate to a version newer than V4.0.18.0 when available. Until then, exercise extreme caution when opening VPR files from untrusted sources, as the vulnerability can be triggered simply by parsing a malicious file.

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. Identify V-Server installation version
    Open V-Server application and navigate to Help > About, or check the file properties of the main executable (typically VServer.exe) in the installation directory
    Affected if The displayed version is 4.0.18.0 or earlier (including any V-Server Lite variant)
  2. Check product variant
    Verify whether the installed product is V-Server full version or V-Server Lite by examining the application name in the installation folder or Add/Remove Programs
    Affected if The product is either V-Server or V-Server Lite with version 4.0.18.0 or earlier
  3. Determine VPR file usage
    Search for .vpr files on the system or check if VPR file associations exist (look for .vpr extension handler registered under HKEY_CLASSES_ROOT in Windows Registry)
    Affected if VPR files are processed by the vulnerable V-Server application version

You are affected if you have Fujielectric V-Server or V-Server Lite version 4.0.18.0 or earlier installed and the application is used to parse 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 to a version newer than V4.0.18.0 when available. Until then, exercise extreme caution when opening VPR files from untrusted sources, as the vulnerability can be triggered simply by parsing a malicious file.

Recommended fix High confidence

V-Server V4.0.19.0 and V-Server Lite V4.0.19.0

  1. Navigate to the official download page for V-Server on hakko-elec.co.jp or monitouch.fujielectric.com
  2. Download V-Server version 4.0.19.0 or later
  3. Download V-Server Lite version 4.0.19.0 or later
  4. Close any running instances of V-Server or V-Server Lite
  5. Run the installer for the updated version
  6. Follow the on-screen installation prompts
  7. After installation, verify the version by checking About or version information
  8. Do not open any untrusted VPR files - only open VPR files from trusted sources

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

Fix this in V Server Scoped from the published advisory
  • Consultation4.0 h
  • Implementation16.0 h
  • Testing8.0 h
  • Review / QA4.0 h
32.0 hours of engineering $5,600
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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-2023-47585 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