dbcve.org
Rbr850 FirmwareOperating system · Netgear

CVE-2021-29065

CRITICAL · 9.6 CVSS v3.1 Published 2021-03-23
Fix available
A fix is available. Upgrade to 3.2.10.11 or later.
See remediation →
100/100
Remediation priority · Urgent
No privileges Zero-click

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 · unedited
NETGEAR RBR850 devices before 3.2.10.11 are affected by authentication bypass.

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 · moderate confidence

NETGEAR RBR850 mesh WiFi systems contain an authentication bypass vulnerability in firmware versions prior to 3.2.10.11. This critical flaw (CVSS 9.6) allows attackers to circumvent authentication mechanisms, potentially gaining unauthorized administrative access to the device. The specific technical details of the bypass mechanism are not disclosed in available sources.

MitigationUpgrade NETGEAR RBR850 devices to firmware version 3.2.10.11 or later to remediate the authentication bypass vulnerability. If patching is not immediately possible, restrict network access to management interfaces and monitor for unauthorized access attempts.

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
Rbr850 FirmwareOperating system
Affected:< 3.2.10.11

CVSS 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
None
User interaction
None
Scope
Changed
Confidentiality
High
Integrity
High
Availability
High

CVSS:3.1/AV:A/AC:L/PR:N/UI:N/S:C/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 checks

Work through these to decide whether this CVE applies to you.

  1. Access router admin interface
    Open a web browser and navigate to the NETGEAR RBR850 admin page (typically http://routerlogin.net or http://192.168.1.1). Log in with administrator credentials.
    Affected if You are able to access the admin interface without proper authentication, indicating the bypass is present.
  2. Locate firmware version information
    In the router admin interface, look for a 'Firmware Update', 'Router Info', or 'Advanced' settings section. The firmware version is usually displayed on the main status page or in the 'Administration' > 'Router Update' area.
    Affected if The displayed firmware version cannot be confirmed or is below 3.2.10.11.
  3. Confirm exact firmware version number
    Record the full firmware version string shown in the admin interface. Compare the numeric version against 3.2.10.11 using standard version comparison (e.g., 3.2.10.10, 3.2.9.5, or any version earlier than 3.2.10.11 is affected).
    Affected if The installed firmware version is lower than 3.2.10.11 (for example, 3.2.10.10, 3.2.9.x, or earlier).

A NETGEAR RBR850 device is affected if its firmware version is confirmed to be lower than 3.2.10.11, which can be verified through the router admin interface.

Generated from the published advisory. Verify against your own configuration.

Check your environment

Paste your version and any relevant configuration and it will be compared against the affected criteria above. Do not include secrets or credentials.

AI-assisted, checked against the advisory. Informational, not a guarantee.

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 · scoped
Upgrade available Upgrade to 3.2.10.11 or later
Fixed in 3.2.10.11
Interim mitigation

Upgrade NETGEAR RBR850 devices to firmware version 3.2.10.11 or later to remediate the authentication bypass vulnerability. If patching is not immediately possible, restrict network access to management interfaces and monitor for unauthorized access attempts.

Recommended fix High confidence

RBR850 Firmware version 3.2.10.11 or later

  1. Download the RBR850 firmware version 3.2.10.11 or later from the official NETGEAR support website (kb.netgear.com)
  2. Access the NETGEAR RBR850 router web interface by entering the router's IP address in a web browser
  3. Log in to the router administration panel with administrator credentials
  4. Navigate to the Advanced tab and select Administration > Firmware Update
  5. Click the 'Check for Updates' button or select 'Upload' to manually select the downloaded firmware file
  6. Wait for the firmware upload to complete and for the router to automatically reboot
Caveat Ensure stable power during firmware update to avoid router damage; backup router configuration if possible

Generated from the published advisory — verify against the referenced sources before acting.

Fix this in Rbr850 Firmware Scoped from the published advisory
  • Consultation4.0 h
  • Implementation2.0 h
  • Testing3.0 h
  • Review / QA2.0 h
11.0 hours of engineering $1,970
Get the upgrade done

An estimate, not a bill — we confirm scope with you before any work starts. Need it this week? Rush from $3,152.

Scan for this in your stack

Free · runs locally
dbcve dependency scanner

Check whether your project pulls in CVE-2021-29065 — or any other known-vulnerable package — straight from your lock files. Free and open source; it runs locally and uploads nothing.

Get it on GitHub Scan in the browser

References Go to the primary sourcePrimary sources — vendor advisories, patches and trackers. Where our summary and a reference disagree, the reference wins.

Primary sources

Practitioner notes

Contributed

Peer-ranked notes from engineers who’ve handled CVE-2021-29065 in production — separate from our analysis above.

No notes yet

Be the first to add a field note for this CVE — a mitigation you’ve verified, a version caveat, or a link to a working fix. Sign in above to contribute.

What this is

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.

What belongs here
  • 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
  • No spam, self-promotion, credentials, or personal data