An issue was discovered on D-Link 6600-AP and DWL-3600AP Ax 4.2.0.14 21/03/2019 devices. There is a pre-authenticated denial of service attack against the access point via a long action parameter to admin.cgi.
An issue was discovered on D-Link DSR-250N before 3.17B devices. The CGI script upgradeStatusReboot.cgi can be accessed without authentication. Any access reboots the device, rendering it therefore unusable for several minutes.