CVE-2020-26927
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 authentication bypass. This affects D6200 before 1.1.00.40, D7000 before 1.0.1.78, R6020 before 1.0.0.42, R6080 before 1.0.0.42, R6050 before 1.0.1.26, JR6150 before 1.0.1.26, R6120 before 1.0.0.66, R6220 before 1.1.0.100, R6260 before 1.1.0.66, R6700v2 before 1.2.0.62, R6800 before 1.2.0.62, R6900v2 before 1.2.0.62, AC2100 before 1.2.0.62, AC2400 before 1.2.0.62, AC2600 before 1.2.0.62, R7450 before 1.2.0.62, and WNR2020 before 1.1.0.62.
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 models suffer from an authentication bypass vulnerability in their firmware. An attacker can bypass the authentication mechanism to gain unauthorized administrative access to the router's web management interface. The vulnerability affects 16 different models across multiple firmware versions.
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< 1.2.0.62< 1.2.0.62< 1.2.0.62< 1.1.00.40< 1.0.1.78< 1.0.1.26< 1.0.0.42< 1.0.1.26CVSS 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
- Network
- Complexity
- Low
- Privileges
- None
- User interaction
- None
- Scope
- Unchanged
- Confidentiality
- High
- Integrity
- High
- Availability
- High
CVSS:3.1/AV:N/AC:L/PR:N/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 your NETGEAR router modelLocate the model number on the device label or log into the router web interface and check the status or administration page for the exact model nameAffected if The model is one of: Ac2100, Ac2400, Ac2600, D6200, D7000, Jr6150, R6020, R6050
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Locate the current firmware versionLog into the router web management interface (typically at 192.168.1.1) and navigate to the Administration or Firmware Upgrade section to view the installed firmware versionAffected if Unable to retrieve firmware version from the web interface
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Compare your firmware version against affected rangesCheck the firmware version displayed in the router admin interface against these thresholds: Ac2100/Ac2400/Ac2600 versions below 1.2.0.62, D6200 below 1.1.00.40, D7000 below 1.0.1.78, Jr6150/R6050 below 1.0.1.26, R6020 below 1.0.0.42Affected if Your installed firmware version is lower than the minimum version listed for your specific model
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Verify web management interface accessibilityConfirm that the router web management interface is accessible from the network (try accessing the router IP in a browser). This vulnerability exploits the HTTP-based authentication in the web interfaceAffected if The web management interface is enabled and reachable on your network
You are affected if your NETGEAR router model matches one of the listed models and your installed firmware version is below the specified threshold for that model, and the web management interface is accessible.
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.
dbcve · scoped1.0.0.421.0.1.261.0.1.78
Update affected NETGEAR router firmware to the specified minimum versions (e.g., D6200 to 1.1.00.40, R6700v2 to 1.2.0.62). If firmware updates are unavailable, disable remote management interfaces and restrict access to local network only.
Device-specific fixed firmware: AC2100/AC2400/AC2600 at 1.2.0.62, D6200 at 1.1.00.40, D7000 at 1.0.1.78, R6020/R6080 at 1.0.0.42, R6050/JR6150 at 1.0.1.26
- 1. Identify the exact NETGEAR router model number from the affected list (Ac2100, Ac2400, Ac2600, D6200, D7000, Jr6150, R6020, R6050, or other affected models).
- 2. Access the router's web interface by entering the default gateway IP (commonly 192.168.1.1) in a web browser.
- 3. Log in with administrative credentials to access router settings.
- 4. Navigate to the Administration or Advanced settings section, then locate the Firmware Update option.
- 5. Check the current firmware version under Router Info or similar section to confirm it is below the fixed version.
- 6. Download the appropriate fixed firmware from the NETGEAR support website (kb.netgear.com) matching the specific model and version required (e.g., 1.2.0.62 for AC series, 1.0.1.78 for D7000, 1.0.1.26 for R6050/JR6150, 1.0.0.42 for R6020).
- 7. In the router's firmware update page, upload the downloaded firmware file and initiate the update.
- 8. Wait for the firmware upload and installation to complete - do not power off the router during this process.
Generated from the published advisory — verify against the referenced sources before acting.
- Consultation4.0 h
- Implementation8.0 h
- Testing4.0 h
- Review / QA2.0 h
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Free · runs locallyCheck whether your project pulls in CVE-2020-26927 — 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-2020-26927 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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