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Fvg318Hardware / appliance · Netgear

CVE-2006-4143

HIGH · 7.8 CVSS v2.0 Published 2006-08-15
Mitigation only
No fix yet — a mitigation exists. There is no fixed release. A documented workaround reduces exposure in the meantime.
See remediation →
87/100
Remediation priority · High
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
Netgear FVG318 running firmware 1.0.40 allows remote attackers to cause a denial of service (router reset) via TCP packets with bad checksums.

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

The Netgear FVG318 router with firmware 1.0.40 improperly processes TCP packets containing invalid checksums, triggering a device reset. This indicates a flaw in the router's packet validation logic where malformed packets cause a critical failure rather than being silently dropped.

MitigationApply any available firmware update from Netgear for this device; if no update exists (given this is a 2006 vulnerability on older hardware), consider network segmentation to limit exposure or replace the end-of-life device.

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
Fvg318Hardware / appliance
Affected:= 1.0.40

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
Authentication
None
Confidentiality
None
Integrity
None
Availability
Complete

AV:N/AC:L/Au:N/C:N/I:N/A:C

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 the device model
    Log into the router's admin interface or check the physical device label to confirm the model is Netgear FVG318
    Affected if The device is not a Netgear FVG318 router (different models are not affected)
  2. Check the firmware version
    Access the router's web admin interface, typically at 192.168.0.1 or 192.168.1.1, and navigate to the Firmware Upgrade or Status page to view the installed firmware version
    Affected if The firmware version is exactly 1.0.40 (no other versions are listed as affected)
  3. Verify network exposure
    Confirm the router is actively processing network traffic by checking its administration interface status page
    Affected if The device is powered on and handling TCP traffic (the vulnerability triggers when malformed TCP packets are received)

The environment is affected only if the device is a Netgear FVG318 router running firmware version exactly 1.0.40 and is actively processing network traffic.

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.

From vendor data
Mitigation available No clean upgrade yet — mitigate in the meantime
Mitigation

Apply any available firmware update from Netgear for this device; if no update exists (given this is a 2006 vulnerability on older hardware), consider network segmentation to limit exposure or replace the end-of-life device.

Fix this in Fvg318 Scoped from the published advisory
  • Consultation4.0 h
  • Implementation4.0 h
  • Testing2.0 h
  • Review / QA2.0 h
12.0 hours of engineering $2,180
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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-2006-4143 in production — separate from our analysis above.

No notes yet

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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
  • No weaponised exploit code, or anything meant to cause harm
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