dbcve.org
R7000 FirmwareOperating system · Netgear

CVE-2021-34977

HIGH · 8.8 CVSS v3.1 Published 2022-01-13
Mitigation only
No fix yet — a mitigation exists. There is no fixed release. A documented workaround reduces exposure in the meantime.
See remediation →
93/100
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
This vulnerability allows network-adjacent attackers to bypass authentication on affected installations of NETGEAR R7000 1.0.11.116_10.2.100 routers. Authentication is not required to exploit this vulnerability. The specific flaw exists within the processing of SOAP requests. The issue results from the lack of proper authentication verification before performing a password reset. An attacker can leverage this vulnerability to reset the admin password. Was ZDI-CAN-13483.

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 confidence

This vulnerability in NETGEAR R7000 routers (firmware 1.0.11.116_10.2.100) allows unauthenticated network-adjacent attackers to reset the admin password by sending specially crafted SOAP requests. The flaw exists because the router fails to verify authentication credentials before processing password reset operations in its SOAP interface, allowing anyone on the adjacent network to gain full administrative access.

MitigationApply the vendor-supplied firmware update from NETGEAR. If no update is available, restrict network access to the router's management interface using firewall rules or VLAN segmentation, and monitor for suspicious SOAP traffic patterns.

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
R7000 FirmwareOperating system
Affected:= 1.0.11.116_10.2.100

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
Unchanged
Confidentiality
High
Integrity
High
Availability
High

CVSS:3.1/AV:A/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 checks

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

  1. Confirm router model
    Access the router web interface or check the physical device label to verify the model is Netgear R7000
    Affected if Router is not a Netgear R7000 model, then not affected by this specific CVE
  2. Check installed firmware version
    Log into the router web interface and navigate to Administration > Firmware Update or check the router status page to view the current firmware version
    Affected if Firmware version is NOT exactly 1.0.11.116_10.2.100, then not affected by this specific CVE
  3. Verify SOAP service accessibility
    From a network-adjacent host, attempt to reach the router's SOAP endpoint on common ports (like 80/443) or check router firewall settings to see if SOAP interface is exposed to local network
    Affected if SOAP interface is completely blocked from network access (not just WAN but also LAN side), the attack surface may be reduced but the firmware vulnerability still exists

User is affected if they have a Netgear R7000 router running exactly firmware version 1.0.11.116_10.2.100 with its SOAP interface accessible from the adjacent network.

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
Mitigation available No clean upgrade yet — mitigate in the meantime
Mitigation

Apply the vendor-supplied firmware update from NETGEAR. If no update is available, restrict network access to the router's management interface using firewall rules or VLAN segmentation, and monitor for suspicious SOAP traffic patterns.

Recommended fix Moderate confidence

Latest R7000 firmware version available from NETGEAR KB (confirm version is later than 1.0.11.116_10.2.100)

  1. 1. Navigate to the official NETGEAR support page at kb.netgear.com
  2. 2. Enter "R7000" in the product search field
  3. 3. locate the firmware download section
  4. 4. Download the latest available firmware version for the R7000 router
  5. 5. Access the router's web management interface (typically at 192.168.1.1)
  6. 6. Navigate to the Administration > Firmware Update section
  7. 7. Select the downloaded firmware file and initiate the update
  8. 8. Wait for the router to complete the firmware installation and reboot
Caveat Firmware updates may reset router configuration to defaults; backup current settings before updating

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

Fix this in R7000 Firmware Scoped from the published advisory
  • Consultation4.0 h
  • Implementation6.0 h
  • Testing3.0 h
  • Review / QA2.0 h
15.0 hours of engineering $2,690
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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-2021-34977 in production — separate from our analysis above.

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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
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  • No spam, self-promotion, credentials, or personal data