A vulnerability was found in TOTOLINK N300RH 6.1c.1390_B20191101. It has been rated as critical. Affected by this issue is the function
CloudACMunualUpdateUserdata
of the file /cgi-bin/cstecgi.cgi. The manipulation of the argument url leads to command injection.
This vulnerability is handled as CVE-2025-4849. The attack may be launched remotely. Furthermore, there is an exploit available.