FirmwareApplication · Compal Broadband Networks

CVE-2014-8656

HIGH · 10.0 CVSS v2.0 Published 2014-11-06
Mitigation only
No fix yet — a mitigation exists. There is no fixed release. A documented workaround reduces exposure in the meantime.
See remediation →
100/100
Remediation priority · Urgent
Public exploit 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
The Compal Broadband Networks (CBN) CH6640E and CG6640E Wireless Gateway 1.0 with firmware CH6640-3.5.11.7-NOSH have a default password of (1) admin for the admin account and (2) compalbn for the root account, which makes it easier for remote attackers to obtain access to certain sensitive information via unspecified vectors.

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

The Compal Broadband Networks CH6640E and CG6640E wireless gateway devices ship with hardcoded default credentials. The admin account uses 'admin' and the root account uses 'compalbn' as default passwords. These credentials provide remote access to the device management interface, allowing attackers to view sensitive configuration information including network settings, ISP credentials, and potentially Wi-Fi keys.

MitigationImmediately change all default credentials on affected devices to strong, unique passwords. If available, apply vendor firmware updates. Restrict access to the device management interface to trusted networks or disable remote management entirely.

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
FirmwareApplication
Affected:= ch6640-3.5.11.7-nosh
Cg6640e Wireless GatewayHardware / appliance
Affected:= 1.0
Ch664oe Wireless GatewayHardware / appliance
Affected:= 1.0

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
Complete
Integrity
Complete
Availability
Complete

AV:N/AC:L/Au:N/C:C/I:C/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 device web interface or check the device label/sticker to confirm the model is a Compal Broadband Networks CH6640E or CG6640E wireless gateway
    Affected if The device model is CH6640E or CG6640E
  2. Check the firmware version
    Navigate to the device management interface, typically at 192.168.0.1, and look in the status or firmware upgrade section for the installed firmware version
    Affected if The firmware version is ch6640-3.5.11.7-nosh (exact match) or version 1.0
  3. Verify remote management access
    Attempt to access the device web management interface from outside the local network or check the remote management settings in the device configuration
    Affected if Remote management or web interface access is enabled and reachable from the network
  4. Confirm default credentials status
    Attempt to log into the device using the default username 'admin' with password 'admin', or username 'root' with password 'compalbn'
    Affected if Either default credential pair (admin/admin or root/compalbn) successfully authenticates to the device management interface

You are affected if you have a CH6640E or CG6640E device with firmware version 1.0 or ch6640-3.5.11.7-nosh where the default passwords 'admin' or 'compalbn' have not been changed and the device management interface is 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.

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

Immediately change all default credentials on affected devices to strong, unique passwords. If available, apply vendor firmware updates. Restrict access to the device management interface to trusted networks or disable remote management entirely.

Fix this in Firmware Scoped from the published advisory
  • Consultation2.0 h
  • Implementation2.0 h
  • Testing1.0 h
  • Review / QA1.0 h
6.0 hours of engineering $1,090
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Scan for this in your stack

Free · runs locally
dbcve dependency scanner

Check whether your project pulls in CVE-2014-8656 — 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 sources

Practitioner notes

Contributed

Peer-ranked notes from engineers who’ve handled CVE-2014-8656 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
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