Dahua DVR appliances have a hardcoded password for (1) the root account and (2) an unspecified "backdoor" account, which makes it easier for remote attackers to obtain administrative access via authorization requests involving (a) ActiveX, (b) a standalone client, or (c) unknown other vectors.

Dahua DVR appliances do not properly restrict UPnP requests, which makes it easier for remote attackers to obtain access via vectors involving a replay attack against the TELNET port.

Cross-site scripting (XSS) vulnerability in NetworkEverywhere NR041 running firmware 1.2 Release 03 allows remote attackers to inject arbitrary web script or HTML via the DHCP HOSTNAME option.