connoppp.cgi on ZTE ZXDSL 831CII devices does not require HTTP Basic Authentication, which allows remote attackers to modify the PPPoE configuration or set up a malicious configuration via a GET request.

Cross-site scripting (XSS) vulnerability in the Quick Stats page (psilan.cgi) in ZTE ZXDSL 831 and 831CII allows remote attackers to inject arbitrary web script or HTML via the domainname parameter in a save action. NOTE: this issue was SPLIT from CVE-2014-9021 per ADT1 due to different affected products and codebases.