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.

More... (http://web.nvd.nist.gov/view/vuln/detail?vulnId=CVE-2009-2272)