WAVLINK WN530H4/WN530HG4/WN572HG3 internet.cgi ping_ddns command injection

A vulnerability was found in WAVLINK WN530H4, WN530HG4 and WN572HG3 up to 20221028 and classified as critical. This issue affects the function ping_ddns of the file internet.cgi. The manipulation of the argument DDNS leads to command injection. The attack may be initiated remotely. The exploit has been disclosed to the public and may be used. The vendor was contacted early about this disclosure but did not respond in any way.