dbcve.org
D3600 FirmwareOperating system · Netgear

CVE-2020-35799

CRITICAL · 9.8 CVSS v3.1 Published 2020-12-30
Fix available
A fix is available. Upgrade to 1.0.0.61 / 1.0.0.76 or later.
See remediation →
100/100
Remediation priority · Urgent
Remotely reachable 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
Certain NETGEAR devices are affected by a stack-based buffer overflow by an unauthenticated attacker. This affects D3600 before 1.0.0.76, D6000 before 1.0.0.78, D6200 before 1.1.00.32, D7000 before 1.0.1.68, D7800 before 1.0.1.56, DM200 before 1.0.0.61, EX2700 before 1.0.1.52, EX6100v2 before 1.0.1.76, EX6150v2 before 1.0.1.76, EX6200v2 before 1.0.1.74, EX6400 before 1.0.2.140, EX7300 before 1.0.2.140, EX8000 before 1.0.1.186, JR6150 before 1.0.1.18, PR2000 before 1.0.0.28, R6020 before 1.0.0.38, R6050 before 1.0.1.18, R6080 before 1.0.0.38, R6120 before 1.0.0.46, R6220 before 1.1.0.80, R6230 before 1.1.0.80, R6260 before 1.1.0.40, R6700v2 before 1.2.0.36, R6800 before 1.2.0.36, R6900v2 before 1.2.0.36, R7500v2 before 1.0.3.40, R7800 before 1.0.2.62, R8900 before 1.0.4.12, R9000 before 1.0.4.12, RBK20 before 2.3.0.28, RBR20 before 2.3.0.28, RBS20 before 2.3.0.28, RBK40 before 2.3.0.28, RBR40 before 2.3.0.28, RBS40 before 2.3.0.28, RBK50 before 2.3.0.32, RBR50 before 2.3.0.32, RBS50 before 2.3.0.32, WN2000RPTv3 before 1.0.1.34, WN3000RPv2 before 1.0.0.78, WN3000RPv2 before 1.0.0.78, WN3000RPv3 before 1.0.2.78, WN3100RPv2 before 1.0.0.66, WNR2000v5 before 1.0.0.70, WNR2020 before 1.1.0.62, XR450 before 2.3.2.32, and XR500 before 2.3.2.32.

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

Stack-based buffer overflow vulnerability in NETGEAR wireless routers and range extenders allows remote unauthenticated attackers to execute arbitrary code via malformed HTTP requests. The vulnerability affects 54 different NETGEAR device models across multiple product lines (D, EX, R, RBK, RBR, RBS, WN, WNR, XR series) running firmware versions prior to the specified patched releases.

MitigationApply available firmware updates from NETGEAR for each affected device model. For devices that have reached end-of-life and no longer receive updates, consider replacement with newer hardware.

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
D3600 FirmwareOperating system
Affected:< 1.0.0.76
D6000 FirmwareOperating system
Affected:< 1.0.078
D6200 FirmwareOperating system
Affected:< 1.1.00.32
D7000 FirmwareOperating system
Affected:< 1.0.1.68
D7800 FirmwareOperating system
Affected:< 1.0.1.56
Dm200 FirmwareOperating system
Affected:< 1.0.0.61
Ex2700 FirmwareOperating system
Affected:< 1.0.1.52
Ex6100v2 FirmwareOperating system
Affected:< 1.0.1.76

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
Network
Complexity
Low
Privileges
None
User interaction
None
Scope
Unchanged
Confidentiality
High
Integrity
High
Availability
High

CVSS:3.1/AV:N/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. Identify NETGEAR device model
    Check the device label, web interface footer, or network fingerprint (many routers expose model info in HTTP headers or on the login page)
    Affected if Device is a NETGEAR router or range extender from the D, EX, R, RBK, RBR, RBS, WN, WNR, or XR series
  2. Locate firmware version in web interface
    Log into the router web interface (typically at 192.168.1.1 or 192.168.0.1) and check under Administration > Firmware Update or Router Status page
    Affected if Firmware version cannot be determined or device is inaccessible via web interface
  3. Compare firmware version to affected ranges
    Match your firmware version against the specific thresholds: D3600 < 1.0.0.76, D6000 < 1.0.0.78, D6200 < 1.1.00.32, D7000 < 1.0.1.68, D7800 < 1.0.1.56, Dm200 < 1.0.0.61, Ex2700 < 1.0.1.52, Ex6100v2 < 1.0.1.76 (and other affected models if your specific model is listed)
    Affected if Installed firmware version is lower than the patched version for your exact model
  4. Confirm HTTP service is exposed
    Verify that the router web management interface is accessible over HTTP/HTTPS from the network (the vulnerability is exploited via malformed HTTP requests)
    Affected if HTTP service is enabled and reachable from network segments other than trusted management VLANs
  5. Check for vendor disclosure
    Review NETGEAR security advisory for your device model to confirm it is included in CVE-2020-35799
    Affected if Your specific model is not listed in NETGEAR's advisory for this CVE or has no published patch

You are affected if you run a NETGEAR router or range extender model listed in the advisory with a firmware version below the patched release threshold and the device HTTP interface is network-accessible.

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 1.0.0.61 / 1.0.0.76 / 1.0.1.52 or later
Fixed in 1.0.0.611.0.0.761.0.1.52
Interim mitigation

Apply available firmware updates from NETGEAR for each affected device model. For devices that have reached end-of-life and no longer receive updates, consider replacement with newer hardware.

Recommended fix High confidence

Model-specific firmware: D3600 (1.0.0.76), D6000 (1.0.0.78), D6200 (1.1.00.32), D7000 (1.0.1.68), D7800 (1.0.1.56), DM200 (1.0.0.61), EX2700 (1.0.1.52), EX6100v2 (1.0.1.76) - download exact version from NETGEAR support site

  1. 1. Identify the specific NETGEAR device model number from the affected list (D3600, D6000, D6200, D7000, D7800, DM200, EX2700, EX6100v2, or other affected models listed in the CVE)
  2. 2. Access the router's web interface by entering the router's IP address in a web browser (typically 192.168.1.1 or 192.168.0.1)
  3. 3. Navigate to the Administration or Advanced settings section and locate the Firmware Update option
  4. 4. Check the current firmware version to confirm it is vulnerable (versions prior to the fixed release)
  5. 5. Download the fixed firmware version from the official NETGEAR support site (support.netgear.com) by searching for the specific model number
  6. 6. In the router's web interface, select the option to upload manually and choose the downloaded firmware file
  7. 7. Wait for the firmware upload and installation to complete - do not power off the router during this process
  8. 8. After the router restarts, verify the new firmware version matches the fixed release version
Caveat Firmware updates may temporarily interrupt network connectivity; ensure stable power during upgrade process

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

Fix this in D3600 Firmware Scoped from the published advisory
  • Consultation4.0 h
  • Implementation8.0 h
  • Testing4.0 h
  • Review / QA2.0 h
18.0 hours of engineering $3,200
Get the upgrade done

An estimate, not a bill — we confirm scope with you before any work starts. Need it this week? Rush from $5,120.

Scan for this in your stack

Free · runs locally
dbcve dependency scanner

Check whether your project pulls in CVE-2020-35799 — 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-2020-35799 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