CVE-2016-9339
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 · uneditedAn issue was discovered in INTERSCHALT Maritime Systems VDR G4e Versions 5.220 and prior. External input is used to construct paths to files and directories without properly neutralizing special elements within the pathname that could allow an attacker to read files on the system, a Path Traversal.
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 confidencePath traversal vulnerability in INTERSCHALT Maritime Systems VDR G4e Versions 5.220 and prior allows unauthenticated attackers to read arbitrary files on the system due to insufficient input validation when constructing file paths from external input.
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<= 5.220CVSS 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
- Low
- Integrity
- None
- Availability
- None
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:N/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 the VDR G4e firmware versionAccess the system administration interface or check the firmware version through the device management console. The exact command or menu path varies by deployment; consult the device documentation for version retrieval.Affected if The installed firmware version is 5.220 or any version prior to 5.220.
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Locate the external input handler for file requestsIdentify which network service or web endpoint on the VDR G4e accepts external input to construct file paths. Review the service configuration or network exposed interfaces.Affected if A service or endpoint that processes external input into file path operations is running and accessible on the network.
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Determine if the file request interface requires authenticationAttempt to access the identified file request endpoint without providing credentials. Check whether the system enforces authentication before processing file path requests.Affected if The interface accepts unauthenticated requests and processes them without authentication verification.
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Verify network accessibility of the vulnerable serviceScan the network to confirm whether the VDR G4e management interface or file handling service is exposed to untrusted networks or the internet.Affected if The service handling file requests is reachable from an untrusted network without firewall restrictions.
A user is affected if the VDR G4e firmware is version 5.220 or prior AND an unauthenticated external input interface for file paths is exposed on the network.
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 input validation and path sanitization to neutralize special path traversal elements (../) before using external input in file path construction; restrict file access to intended directories only.
- Consultation4.0 h
- Implementation8.0 h
- Testing6.0 h
- Review / QA4.0 h
An estimate, not a bill — we confirm scope with you before any work starts. Need it this week? Rush from $6,176.
Scan for this in your stack
Free · runs locallyCheck whether your project pulls in CVE-2016-9339 — 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-2016-9339 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
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