The Huawei D100 has (1) a certain default administrator password for the web interface, and does not force a password change; and has (2) a default password of admin for the admin account in the telnet interface; which makes it easier for remote attackers to obtain access.
The Huawei D100 allows remote attackers to obtain sensitive information via a direct request to (1) lanstatusadv.asp, (2) wlanbasiccfg.asp, or (3) lancfg.asp in en/, related to use of JavaScript to protect against reading file contents.
The Huawei D100 stores the administrator's account name and password in cleartext in a cookie, which allows context-dependent attackers to obtain sensitive information by (1) reading a cookie file, by (2) sniffing the network for HTTP headers, and possibly by using unspecified other vectors.
The default configuration of the Wi-Fi component on the Huawei D100 does not use encryption, which makes it easier for remote attackers to obtain sensitive information by sniffing the network.