CVE-2023-40731
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 · uneditedA vulnerability has been identified in QMS Automotive (All versions < V12.39). The affected application allows users to upload arbitrary file types. This could allow an attacker to upload malicious files, that could potentially lead to code tampering.
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 · moderate confidenceQMS Automotive versions before V12.39 contain an insecure file upload vulnerability where the application fails to properly validate uploaded file types. This allows attackers to upload arbitrary files including malicious executables or scripts, which could lead to code tampering or remote code execution depending on how the application handles uploaded files.
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< 12.39CVSS 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
- Network
- Complexity
- Low
- Privileges
- Low
- User interaction
- None
- Scope
- Unchanged
- Confidentiality
- High
- Integrity
- High
- Availability
- High
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/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 checksWork through these to decide whether this CVE applies to you.
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Identify QMS Automotive versionLocate the installed QMS Automotive version number through the application UI (typically in Help > About or system information), or check the software inventory/system registry if availableAffected if The installed version is below 12.39 (any version from earlier releases up to 12.38)
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Confirm file upload feature is enabledAccess the QMS Automotive application and locate the file upload functionality (typically in document management, import, or attachment sections)Affected if The file upload module is present and accessible to users in the application
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Inspect upload directory placementCheck application configuration files or server settings to determine where uploaded files are stored relative to the web server document rootAffected if Uploaded files are stored within or accessible from the web root directory
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Verify script execution restrictionsExamine web server configuration (IIS/Apache/nginx) or application settings for the upload directory to determine if script execution is disabledAffected if Script execution is not explicitly disabled in the upload directory (e.g., no handler mappings blocked, no .htaccess/URL rewrite rules blocking executable extensions)
Environment is affected if QMS Automotive version is below 12.39 AND the file upload feature is accessible AND uploaded files can be executed from their storage location.
Generated from the published advisory. Verify against your own configuration.
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 · scoped12.39
Upgrade to QMS Automotive V12.39 or later which contains the security fix. Additionally, implement proper file type validation (whitelist approach), restrict upload directories outside web root, and disable script execution in upload directories.
Upgrade to QMS Automotive V12.39 or later
- 1. Identify the current version of QMS Automotive currently installed in your environment
- 2. Verify the current version is below V12.39 (any version < V12.39 is affected)
- 3. Review the V12.39 release notes for any changes or considerations before upgrading
- 4. Create a complete backup of the current QMS Automotive installation and associated database
- 5. Schedule a maintenance window for the upgrade process
- 6. In a non-production/test environment first, perform the upgrade to V12.39 or later to validate compatibility
- 7. After successful testing, apply the upgrade to the production environment
- 8. Verify the installation completed successfully and the version is now V12.39 or higher
Generated from the published advisory — verify against the referenced sources before acting.
- Consultation3.0 h
- Implementation6.0 h
- Testing4.0 h
- Review / QA2.0 h
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Free · runs locallyCheck whether your project pulls in CVE-2023-40731 — or any other known-vulnerable package — straight from your lock files. Free and open source; it runs locally and uploads nothing.
References Go to the primary sourcePrimary sources — vendor advisories, patches and trackers. Where our summary and a reference disagree, the reference wins.
Primary sourcesPractitioner notes
ContributedPeer-ranked notes from engineers who’ve handled CVE-2023-40731 in production — separate from our analysis above.
The advisory tells you what broke. It rarely tells you what actually worked. If you’ve dealt with this one, that detail is what the next engineer is searching for.
- The version that genuinely resolved it — not the one the vendor claimed
- A config change or rule that shut the vector down
- A gotcha in the upgrade path that cost you an afternoon
No notes yet
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- 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
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