CVE-2025-7917
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 · uneditedWinMatrix3 Web package developed by Simopro Technology has an Arbitrary File Upload vulnerability, allowing remote attackers with administrator privileges to upload and execute web shell backdoors, thereby enabling arbitrary code execution on the server.
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 confidenceWinMatrix3 Web package by Simopro Technology contains an arbitrary file upload vulnerability that allows authenticated remote attackers with administrator privileges to upload malicious files, including web shell backdoors. Successful exploitation enables arbitrary code execution on the server through the execution of uploaded web shells.
Verify against the referenced sources before acting — the references below are authoritative for this CVE, this summary is not.
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
- Network
- Complexity
- Low
- Privileges
- High
- User interaction
- None
- Scope
- Unchanged
- Confidentiality
- High
- Integrity
- High
- Availability
- High
CVSS:3.1/AV:N/AC:L/PR:H/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 WinMatrix3 Web installationSearch the system for Simopro WinMatrix3 Web components. Check web server directories (IIS/Apache/nginx www folders) for files containing 'WinMatrix3', 'Simopro', or 'matrix' in filenames or paths. Review installed software lists for Simopro entries.Affected if WinMatrix3 Web by Simopro Technology is present on the system
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Verify administrator access is enabledReview the WinMatrix3 Web configuration files and authentication settings. Check if administrator accounts are created and the web management interface is accessible.Affected if Administrator authentication is configured and accessible on the WinMatrix3 Web interface
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Locate the file upload functionalityIdentify the upload endpoint in the WinMatrix3 Web application. Common paths may include /upload, /fileupload, /admin/upload, or similar. Inspect the web application source or configuration for upload-handling modules.Affected if A file upload feature exists and is accessible via the web interface
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Inspect uploaded file storage locationExamine where uploaded files are stored. Check the web root directory and subdirectories for any user-uploaded content. Review application configuration for upload path settings.Affected if Uploaded files are stored within the web root directory or a publicly accessible location
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Scan for suspicious web shell filesSearch the web-accessible directories for unusual file types (especially .asp, .jsp, .php, .exe, .bat, .cmd) with random names, modified dates, or unexpected content. Use file integrity monitoring if available to detect newly created files.Affected if Unexpected script files or potential web shells exist in web-accessible directories
The environment is affected if WinMatrix3 Web by Simopro Technology is installed and the web-based file upload feature is accessible to authenticated administrators.
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.
From vendor dataImplement strict file upload validation including file type whitelisting, content-based magic byte verification, and store uploaded files outside the web root with randomized filenames to prevent execution.
- Consultation3.0 h
- Implementation8.0 h
- Testing4.0 h
- Review / QA2.0 h
An estimate, not a bill — we confirm scope with you before any work starts. Need it this week? Rush from $4,800.
Scan for this in your stack
Free · runs locallyCheck whether your project pulls in CVE-2025-7917 — 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-2025-7917 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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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.
- 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