CVE-2021-45568
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 RBK752 before 3.2.16.6, RBR750 before 3.2.16.6, RBS750 before 3.2.16.6, RBK852 before 3.2.16.6, RBR850 before 3.2.16.6, and RBS850 before 3.2.16.6.
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 confidenceNETGEAR Orbi mesh WiFi systems (models RBK752, RBR750, RBS750, RBK852, RBR850, RBS850) firmware before 3.2.16.6 contains a command injection vulnerability allowing authenticated users to execute arbitrary operating system commands via improper input sanitization in the web management 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< 3.2.16.6< 3.2.16.6< 3.2.16.6< 3.2.16.6< 3.2.16.6< 3.2.16.6CVSS 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 Orbi model numberCheck the device label on the router or satellite unit, or log into the web management interface and look under Advanced > Administration > Router InformationAffected if Model is RBK752, RBR750, RBS750, RBK852, RBR850, or RBS850
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Check installed firmware versionLog into the web management interface and navigate to Advanced > Administration > Firmware Update or Router Information page to view the current firmware versionAffected if Firmware version is older than 3.2.16.6 (e.g., 3.2.14.4, 3.2.10.5, etc.)
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Verify web management interface accessibilityAttempt to access the Orbi web interface by entering the router IP address in a web browserAffected if Web management interface is accessible on the local network (typically at 192.168.1.1 or orbilogin.com)
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Confirm authentication statusCheck if administrator credentials are configured and the web interface is password-protectedAffected if Web interface authentication is enabled (required for the authenticated command injection to be exploitable)
The device is affected if it is one of the listed models (RBK752, RBR750, RBS750, RBK852, RBR850, RBS850) and runs firmware version 3.2.16.6 or lower, with the web management interface accessible and authentication configured.
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 · scoped3.2.16.6
Update NETGEAR Orbi firmware to version 3.2.16.6 or later via the web management interface or NETGEAR Nighthawk app. Ensure strong administrator passwords are in place to protect the authenticated attack vector.
Firmware 3.2.16.6 or later for NETGEAR Orbi models (Rbk752, Rbr750, Rbs750, Rbk852, Rbr850, Rbs850)
- Identify the exact NETGEAR model (Rbk752, Rbr750, Rbs750, Rbk852, Rbr850, or Rbs850) from the affected list
- Download firmware version 3.2.16.6 or later from the official NETGEAR support site (kb.netgear.com) for the specific model
- Log in to the router's web management interface using administrator credentials
- Navigate to the firmware update section (typically under Administration or Settings > Firmware Update)
- Upload the downloaded firmware file and initiate the update
- Wait for the firmware to upload and apply - do not power off the device during this process
- After reboot, verify the firmware version has been updated to 3.2.16.6 or later
Generated from the published advisory — verify against the referenced sources before acting.
- Consultation2.0 h
- Implementation2.0 h
- Testing3.0 h
- Review / QA1.0 h
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Free · runs locallyCheck whether your project pulls in CVE-2021-45568 — 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-2021-45568 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
- No weaponised exploit code, or anything meant to cause harm
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