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.
https://exchange.xforce.ibmcloud.com/vulnerabilities/98330
https://euvd.enisa.europa.eu/vulnerability/EUVD-2014-8493
http://www.zeroscience.mk/en/vulnerabilities/ZSL-2014-5203.php