CVE-2020-35790
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 D7800 before 1.0.1.56, R7800 before 1.0.2.68, R8900 before 1.0.4.26, and R9000 before 1.0.4.26.
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 confidenceThis is an authenticated command injection vulnerability in the web interface of multiple NETGEAR router models (D7800, R7800, R8900, R9000). An attacker with valid admin credentials can inject and execute arbitrary operating system commands through unsanitized input parameters in the firmware's HTTP interface.
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< 1.0.1.56< 1.0.2.68< 1.0.4.26< 1.0.4.26CVSS 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 modelLocate the model number on the device label or log into the web administration interface and check the status or administration page for the exact model designationAffected if Model is D7800, R7800, R8900, or R9000
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Check installed firmware versionLog into the router web interface, navigate to Administration > Firmware Update or Advanced > Administration > Router Status, and record the current firmware version numberAffected if Firmware version is below 1.0.1.56 for D7800, below 1.0.2.68 for R7800, or below 1.0.4.26 for R8900/R9000
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Determine web interface exposureCheck router firewall settings and WAN/Internet-facing access configuration to see if the administrative web interface is reachable from external networksAffected if The router web administration interface is accessible from the WAN or untrusted networks
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Assess credential exposureReview access logs, check for compromised admin passwords, or determine if default credentials are in useAffected if Admin credentials are weak, default, or potentially compromised by unauthorized parties
You are affected if your router model is D7800, R7800, R8900, or R9000 and the installed firmware version falls below the fixed version thresholds, especially if the web interface is exposed to untrusted networks or admin credentials may be compromised.
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 data1.0.1.561.0.2.681.0.4.26
Update NETGEAR router firmware to version 1.0.1.56 (D7800), 1.0.2.68 (R7800), or 1.0.4.26 (R8900/R9000) or later. Limit administrative access to trusted personnel and consider network segmentation.
- Consultation2.0 h
- Implementation3.0 h
- Testing3.0 h
- Review / QA2.0 h
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Free · runs locallyCheck whether your project pulls in CVE-2020-35790 — 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-2020-35790 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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A place for practitioners to share what actually worked: a mitigation you’ve tested, a configuration change, a version- or environment-specific caveat, or a link to a verified patch. The most useful notes rise to the top as peers upvote them, so the signal stays high.
- 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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