CVE-2019-20688
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 · uneditedCertain NETGEAR devices are affected by command injection by an authenticated user. This affects D3600 before 1.0.0.75, D6000 before 1.0.0.75, D6100 before 1.0.0.63, EX2700 before 1.0.1.48, EX6100v2 before 1.0.1.76, EX6150v2 before 1.0.1.76, EX6200v2 before 1.0.1.72, EX6400 before 1.0.2.136, EX7300 before 1.0.2.136, EX8000 before 1.0.1.180, R7800 before 1.0.2.52, R8900 before 1.0.4.2, R9000 before 1.0.4.2, WN2000RPTv3 before 1.0.1.32, WN3000RPv2 before 1.0.0.68, WN3100RPv2 before 1.0.0.60, WNDR3700v4 before 1.0.2.102, WNDR4300v1 before 1.0.2.104, WNDR4300v2 before 1.0.0.58, WNDR4500v3 before 1.0.0.58, WNR2000v5 before 1.0.0.68, and XR500 before 2.3.2.32.
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 confidenceMultiple NETGEAR router and range extender models contain a command injection vulnerability that allows authenticated users to execute arbitrary commands on the underlying operating system via insufficient input sanitization in web interface parameters.
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< 1.0.0.75< 1.0.0.75< 1.0.0.63< 1.0.1.48< 1.0.1.76< 1.0.1.76< 1.0.1.72< 1.0.2.136CVSS 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
- High
- User interaction
- None
- Scope
- Unchanged
- Confidentiality
- High
- Integrity
- High
- Availability
- High
CVSS:3.1/AV:A/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 the NETGEAR device modelAccess the router admin interface or check the device label to confirm the exact model number (e.g., D3600, D6000, D6100, Ex2700, Ex6100, Ex6150, Ex6200, Ex6400)Affected if The device model matches one of these: D3600, D6000, D6100, Ex2700, Ex6100, Ex6150, Ex6200, Ex6400
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Check the installed firmware versionLog into the router web interface and navigate to the firmware version or status page to view the current firmware build numberAffected if The firmware version is below the affected threshold for your model (D3600/D6000: < 1.0.0.75, D6100: < 1.0.0.63, Ex2700: < 1.0.1.48, Ex6100/Ex6150: < 1.0.1.76, Ex6200: < 1.0.1.72, Ex6400: < 1.0.2.136)
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Verify if remote web management is enabledCheck the router settings for 'Remote Management', 'Remote Access', or 'Web Management' options typically found under Advanced or Administration settingsAffected if Remote web management interface is accessible from the WAN/internet side (not just LAN)
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Confirm web interface authentication statusVerify whether the router admin web interface is password-protected and check if default credentials are in useAffected if The web interface is accessible with valid admin credentials, as this vulnerability requires authenticated access to inject commands
You are affected if your device model is one of the listed models and your current firmware version is below the specified threshold, especially if the web management interface is accessible remotely or with weak authentication.
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 data1.0.0.631.0.0.751.0.1.48
Apply the appropriate firmware update for each affected device model as specified in the vendor advisory. If updates are unavailable, consider network segmentation to limit exposure and disable remote management interfaces.
- Consultation4.0 h
- Implementation8.0 h
- Testing6.0 h
- Review / QA4.0 h
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Scan for this in your stack
Free · runs locallyCheck whether your project pulls in CVE-2019-20688 — 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-2019-20688 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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