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5.0

Compal CH6640E/CG6640E routers can drop Wi‑Fi

CVE-2014-8657 · published 12 years ago
Summary

The CH6640E and CG6640E wireless gateways running firmware version CH6640-3.5.11.7-NOSH can be triggered remotely to stop all Wi‑Fi devices from staying connected. This happens when an attacker sends a special request to a web page used by the router. Update the router firmware or block external access to the router's web interface to prevent the disruption.

What to do

The CVE record does not list a fixed version. Check the vendor's site or the advisory links below - a fix may already be released.

Affected software
VendorProductAffected versions
compal_broadband_networks firmware ch6640-3.5.11.7-nosh
cpe:2.3:a:compal_broadband_networks:firmware:ch6640-3.5.11.7-nosh:*:*:*:*:*:*:*
compal_broadband_networks cg6640e_wireless_gateway 1.0
cpe:2.3:h:compal_broadband_networks:cg6640e_wireless_gateway:1.0:*:*:*:*:*:*:*
compal_broadband_networks ch664oe_wireless_gateway 1.0
cpe:2.3:h:compal_broadband_networks:ch664oe_wireless_gateway:1.0:*:*:*:*:*:*:*
Original advisory text
The Compal Broadband Networks (CBN) CH6640E and CG6640E Wireless Gateway 1.0 with firmware CH6640-3.5.11.7-NOSH allows remote attackers to cause a denial of service (disconnect all wifi clients) vi...
The Compal Broadband Networks (CBN) CH6640E and CG6640E Wireless Gateway 1.0 with firmware CH6640-3.5.11.7-NOSH allows remote attackers to cause a denial of service (disconnect all wifi clients) via a request to wirelessChannelStatus.html.
References
Fix within
Internet-facing 14 days
Internal 60 days
  • Not known to be exploited
  • Can be exploited automatically (estimated)
  • Gives an attacker partial control (estimated)
Severity
5.0 Medium
Exploitation
7% chance of attack within 30 days
Type
CWE-16Configuration
Timeline
Published6 Nov 2014
Updated4 Nov 2026
First seen29 Sep 2026
Sources
CVE-2014-8657 · NVD
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