CVE-2016-9494
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 · uneditedHughes high-performance broadband satellite modems, models HN7740S DW7000 HN7000S/SM, are potentially vulnerable to improper input validation. The device's advanced status web page that is linked to from the basic status web page does not appear to properly parse malformed GET requests. This may lead to a denial of service.
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 confidenceHughes satellite modem models HN7740S, DW7000, and HN7000S/SM contain an improper input validation vulnerability in the advanced status web page. The web interface fails to properly handle malformed GET requests, which can cause the device to become unresponsive and result in a denial of service condition.
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= 6.9.0.34= 6.9.0.34= 6.9.0.34= 6.9.0.34CVSS 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
- Adjacent
- Complexity
- Low
- Privileges
- None
- User interaction
- None
- Scope
- Unchanged
- Confidentiality
- None
- Integrity
- None
- Availability
- High
CVSS:3.0/AV:A/AC:L/PR:N/UI:N/S:U/C:N/I:N/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 the device modelLocate the device label on the Hughes modem or access the web management interface to view the model information. Common access URLs are http://192.168.0.1 or http://192.168.1.1. Look for a model identifier such as HN7740S, DW7000, HN7000S, or HN7000SM.Affected if The device model is NOT one of: HN7740S, DW7000, HN7000S, or HN7000SM. If your model is different, you are not affected by this CVE.
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Check the firmware versionAccess the modem web interface and navigate to the status or advanced status page to view the firmware version. Alternatively, check the device documentation or label for firmware information. Look for a version string matching exactly 6.9.0.34.Affected if The firmware version is NOT 6.9.0.34. If your firmware is a different version (higher or lower), this specific CVE does not apply.
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Verify web interface accessibilityAttempt to access the modem web interface from a browser using the default gateway IP address. Confirm the page loads and displays login or status content.Affected if The web interface is not accessible or not enabled. The vulnerability requires the web management interface to be reachable for the malformed GET request to trigger the denial of service.
You are affected if your device is a Hughes HN7740S, DW7000, HN7000S, or HN7000SM with firmware version exactly 6.9.0.34 and the web management interface is accessible on your 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 proper input validation on the web server to sanitize and validate all GET request parameters before processing. Consider network segmentation to restrict access to the device's web management interface if firmware updates are unavailable.
- Consultation3.0 h
- Implementation6.0 h
- Testing3.0 h
- Review / QA2.0 h
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Free · runs locallyCheck whether your project pulls in CVE-2016-9494 — 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-2016-9494 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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- Version or environment caveats, and links to real fixes
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