CVE-2021-45587
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 (RBK752, RBR750, RBS750, RBK852, RBR850, RBS850) contain an authenticated command injection vulnerability allowing an authenticated attacker to execute arbitrary commands on the underlying operating system through insufficient input validation 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 your Orbi modelLocate the model number on the device label or access the web management interface to view the device model. Confirm it is one of: RBK752, RBR750, RBS750, RBK852, RBR850, or RBS850.Affected if The model is one of the six affected models listed in the CVE.
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Check installed firmware versionLog into the web management interface (typically at 192.168.1.1 or orbilogin.com) and navigate to the Administration or Settings section to view the current firmware version. Alternatively, use the NETGEAR Orbi app if configured.Affected if The displayed firmware version is lower than 3.2.16.6.
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Verify web management interface is accessibleConfirm the web-based administration interface is enabled and reachable on your local network by attempting to access the device IP or hostname in a browser.Affected if The web management interface is exposed and reachable.
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Confirm administrative access is configuredVerify that an administrator account exists and is enabled for the web management interface. Check if default credentials have been changed or if custom admin accounts are set up.Affected if Administrative credentials are configured, making authentication possible for an attacker.
You are affected if you are running any of the affected Orbi models (RBK752, RBR750, RBS750, RBK852, RBR850, RBS850) with firmware version lower than 3.2.16.6 and the web management interface is accessible with administrative credentials 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 to remediate this vulnerability. Restrict administrative access to trusted users and networks to reduce the attack surface.
Firmware version 3.2.16.6 or later for Rbk752, Rbr750, Rbs750, Rbk852, Rbr850, and Rbs850
- Identify your NETGEAR Orbi model (RBK752, RBR750, RBS750, RBK852, RBR850, or RBS850)
- Navigate to the NETGEAR support website at kb.netgear.com and locate the firmware download page for your specific model
- Download firmware version 3.2.16.6 or later for your device
- Access the Orbi router's web management interface by entering its IP address in a browser
- Log in with administrator credentials
- Navigate to the Administration > Firmware Update section
- Upload the downloaded firmware file and apply the update
- Wait for the device to reboot and verify the firmware version shows 3.2.16.6 or later
Generated from the published advisory — verify against the referenced sources before acting.
- Consultation2.0 h
- Implementation2.0 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-2021-45587 — 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-2021-45587 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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