CVE:CVE-2018-14080
CNNVD:CNNVD-201810-451
D-Link DIR-809 A1、A2和Guest Zone都是友讯（D-Link）公司的无线路由器产品。
D-Link DIR-809 A1 1.09及之前、A2 1.11及之前版本和Guest Zone 1.09及之前版本中存在安全漏洞。攻击者可利用该漏洞绕过身份验证机制，下载配置文件。
solution:Upgrade d-link dir-809_a1_firmware to a higher version than 1.09,and avoid the version (,1.09]; Upgrade d-link dir-809_a2_firmware to a higher version than 1.11,and avoid the version (,1.11]; Upgrade d-link dir-809_guestzone_firmware to a higher version than 1.09,and avoid the version (,1.09]