CVE-2019-20724
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, D7800 before 1.0.1.44, R7500v2 before 1.0.3.38, R7800 before 1.0.2.52, R8900 before 1.0.4.2, R9000 before 1.0.4.2, RBK20 before 2.3.0.28, RBR20 before 2.3.0.28, RBS20 before 2.3.0.28, RBK50 before 2.3.0.32, RBR50 before 2.3.0.32, RBS50 before 2.3.0.32, RBS40 before 2.3.0.28, 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 confidenceAuthenticated command injection vulnerability in multiple NETGEAR router firmware versions. An attacker with valid admin credentials can inject arbitrary OS commands through the web interface, achieving remote code execution on the affected device.
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< 1.0.3.38< 1.0.2.52< 1.0.4.2< 1.0.4.2< 2.3.0.28CVSS 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 router modelCheck the product label on the device or log into the admin web interface to view the device model information.Affected if The model is one of: D3600, D6000, D6100, R7500, R7800, R8900, R9000, or Rbk20.
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Check firmware versionLog into the router admin web interface and navigate to the firmware or status page to view the current firmware version. Alternatively, check the version displayed on the device label or use the router's command line interface if accessible.Affected if The installed firmware version is below the threshold for your model: D3600/D6000 < 1.0.0.75, D6100 < 1.0.0.63, R7500 < 1.0.3.38, R7800 < 1.0.2.52, R8900/R9000 < 1.0.4.2, or Rbk20 < 2.3.0.28.
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Verify admin web interface accessibilityDetermine if the router admin web interface (typically on ports 80 or 443) is accessible from untrusted networks. Attempt to access the login page from an external location or review firewall rules.Affected if The admin web interface is exposed to the internet or untrusted local networks.
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Review admin account securityCheck if default admin credentials are still in use, if weak passwords are configured, or if there are unauthorized admin accounts. Review the user list in the router admin interface.Affected if Admin credentials are weak, default, or there are unrecognized admin accounts, as the vulnerability requires valid admin authentication.
You are affected if you use any of the listed NETGEAR models (D3600, D6000, D6100, R7500, R7800, R8900, R9000, Rbk20) and your firmware version is below the specified threshold, since the flaw requires authenticated admin access to the web interface for command injection.
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 data1.0.0.631.0.0.751.0.2.52
Update affected NETGEAR devices to the specified firmware versions. Until patched, restrict administrative web interface access to trusted users only and monitor for suspicious administrative activity.
- Consultation2.0 h
- Implementation4.0 h
- Testing3.0 h
- Review / QA1.0 h
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Scan for this in your stack
Free · runs locallyCheck whether your project pulls in CVE-2019-20724 — 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-2019-20724 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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