Intelbras WRN 150 devices allow remote attackers to read the configuration file, and consequently bypass authentication, via a direct request for cgi-bin/DownloadCfg/RouterCfm.cfg containing an admin:language=pt cookie.

Intelbras WRN 150 1.0.18 devices allow CSRF via GO=system_password.asp to the goform/SysToolChangePwd URI to change a password.

An issue was discovered on Intelbras WRN 150 1.0.17 devices. There is stored XSS in the Service Name tab of the WAN configuration screen, leading to a denial of service (inability to change the configuration).