A remote buffer overflow vulnerability in the /cgi-bin/makeRequest.cgi endpoint of the WAVLINK WN530H4 M30H4.V5030.190403 allows an attacker to execute arbitrary machine instructions as root without authentication.

Multiple authentication bypass vulnerabilities in the /cgi-bin/ endpoint of the WAVLINK WN530H4 M30H4.V5030.190403 allow an attacker to leak router settings, change configuration variables, and cause denial of service via an unauthenticated endpoint.

CSRF vulnerabilities in the /cgi-bin/ directory of the WAVLINK WN530H4 M30H4.V5030.190403 allow an attacker to remotely access router endpoints, because these endpoints do not contain CSRF tokens. If a user is authenticated in the router portal, then this attack will work.