CVE-2023-3256
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 · uneditedAdvantech R-SeeNet versions 2.4.22 allows low-level users to access and load the content of local files.
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 confidenceAdvantech R-SeeNet version 2.4.22 contains a vulnerability that allows authenticated low-level users to read arbitrary local files on the server, likely through a path traversal or local file inclusion flaw in the web application.
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<= 2.4.22CVSS 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
- None
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:N
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 if Advantech R-SeeNet is installedLocate R-SeeNet installation directories or check running services for R-SeeNet processes. Common locations include /opt/, /usr/local/, or under the web server root. Review installed software inventories if available.Affected if R-SeeNet software is found running on the system
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Determine the installed R-SeeNet versionCheck version files within the R-SeeNet installation directory, review the web application login page for version disclosure, or query the application directly if an API endpoint exposes version information.Affected if The installed version is 2.4.22 or any version prior to 2.4.22
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Verify the R-SeeNet web interface is accessibleConfirm the R-SeeNet web application is reachable over HTTP/HTTPS from the network. Attempt to access the login page or main dashboard URL.Affected if The web interface is exposed and reachable
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Confirm user authentication is enabledCheck if the R-SeeNet application has authentication mechanisms enabled. Verify that user accounts (including low-level accounts) can log in to the web interface.Affected if User authentication is configured and functional, allowing low-level user access to the application
If R-SeeNet version 2.4.22 or earlier is installed and the web interface with user authentication is accessible, the environment is likely affected by this path traversal vulnerability.
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 dataApply vendor patches or upgrade to a patched version of R-SeeNet. If no patch is available, restrict web application access to trusted users only and implement strict input validation on file access parameters.
- Consultation4.0 h
- Implementation4.0 h
- Testing4.0 h
- Review / QA2.0 h
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Scan for this in your stack
Free · runs locallyCheck whether your project pulls in CVE-2023-3256 — 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-2023-3256 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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