CVE-2025-7916
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 developed by Simopro Technology has an Insecure Deserialization vulnerability, allowing unauthenticated remote attackers to execute arbitrary code on the server by sending maliciously crafted serialized contents.
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 by Simopro Technology contains an insecure deserialization vulnerability that allows unauthenticated remote attackers to achieve arbitrary code execution on the server by sending specially crafted malicious serialized data. This critical flaw stems from the application deserializing untrusted data without proper validation, enabling remote code execution without any authentication credentials.
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
- None
- User interaction
- None
- Scope
- Unchanged
- Confidentiality
- High
- Integrity
- High
- Availability
- High
CVSS:3.1/AV:N/AC:L/PR:N/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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Confirm WinMatrix3 installationSearch for WinMatrix3 in installed programs (Windows: Control Panel > Programs and Features, or check C:\Program Files for Simopro or WinMatrix3 folders)Affected if WinMatrix3 by Simopro Technology is installed
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Identify installed versionCheck the application's About section, or examine version info in the executable properties (right-click the main .exe file > Properties > Details), or look for a version file in the installation directoryAffected if The installed version matches the affected version range (compare your version against any officially listed affected versions from the vendor)
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Verify network exposureCheck if the WinMatrix3 service is listening on network ports (run 'netstat -an | findstr LISTENING' or use a port scanner) and whether it is accessible from untrusted networksAffected if The service is exposed to unauthenticated network access without proper firewall or authentication barriers
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Inspect serialization configurationExamine application configuration files for data deserialization settings; check logs for deserialization activity or known gadget usage patterns; review if the application accepts serialized input from clientsAffected if The application accepts and deserializes untrusted serialized data from external sources without validation
You are affected if WinMatrix3 is installed and the application deserializes untrusted data without authentication or input validation, as this enables remote code execution.
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 dataReplace insecure serialization with safe alternatives such as JSON, XML with strict schema validation, or signed/encrypted serialization; implement authentication and input validation layers; apply vendor patches when available.
- Consultation12.0 h
- Implementation32.0 h
- Testing20.0 h
- Review / QA12.0 h
An estimate, not a bill — we confirm scope with you before any work starts. Need it this week? Rush from $21,312.
Scan for this in your stack
Free · runs locallyCheck whether your project pulls in CVE-2025-7916 — 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-2025-7916 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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