CVE-2021-45583
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 confidenceAuthenticated command injection vulnerability in NETGEAR Orbi mesh WiFi systems (RBK752, RBR750, RBS750, RBK852, RBR850, RBS850) running firmware versions prior to 3.2.16.6. An authenticated attacker can execute arbitrary OS commands on the affected devices via insecure handling of user input in a web interface function.
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 the exact Orbi model numberCheck the physical label on the device or access the web administration interface and locate the model number displayed on the dashboard or status pageAffected if The model is not one of RBK752, RBR750, RBS750, RBK852, RBR850, or RBS850, then the device is not affected by this specific CVE
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Check the installed firmware versionLog into the Orbi web interface (typically at 192.168.1.1 or orbilogin.com), navigate to Administration > Firmware Update or Advanced > Administration > Firmware Upgrade, and note the current firmware version displayedAffected if The firmware version is 3.2.16.6 or later, then the device is not affected; if it is earlier than 3.2.16.6 (such as 3.2.14.x or older), the device falls within the vulnerable version range
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Verify remote administration is enabledIn the web interface, go to Advanced > Remote Management or Administration > Remote Management, and check whether remote access via internet is enabledAffected if Remote management is enabled and the device meets the vulnerable model and version criteria, the attack surface is exposed to remote authenticated attackers
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Confirm administrative credentials are in useVerify that the device uses default or weak administrative credentials, or that multiple user accounts exist with web interface accessAffected if The device is using default credentials or has multiple users with administrative web access, an attacker with any valid credentials could exploit this command injection flaw
If your Orbi device is one of the listed models (RBK752, RBR750, RBS750, RBK852, RBR850, RBS850) and runs firmware earlier than version 3.2.16.6, and an attacker can obtain valid web interface credentials, the device is vulnerable to CVE-2021-45583.
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. Restrict administrative access to trusted users and networks to limit exposure.
Firmware version 3.2.16.6 for RBK752, RBR750, RBS750, RBK852, RBR850, and RBS850
- 1. Identify the exact NETGEAR Orbi router model (RBK752, RBR750, RBS750, RBK852, RBR850, or RBS850) requiring the update
- 2. Connect to the router's web interface by entering its IP address in a web browser
- 3. Log in with administrator credentials
- 4. Navigate to the Settings or Administration section
- 5. Look for a Firmware Update or Router Update option
- 6. Check the current firmware version under the router status or advanced settings
- 7. If the firmware version is below 3.2.16.6, select the option to check for updates or manually upload firmware version 3.2.16.6
- 8. Allow the firmware update process to complete - do not power off the router during this process
Generated from the published advisory — verify against the referenced sources before acting.
- Consultation2.0 h
- Implementation3.0 h
- Testing2.0 h
- Review / QA1.0 h
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Scan for this in your stack
Free · runs locallyCheck whether your project pulls in CVE-2021-45583 — 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-2021-45583 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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