CVE-2026-5004 Wavlink WL-WN579X3-C UPNP firewall.cgi sub_4019FC stack-based overflow

A vulnerability was determined in Wavlink WL-WN579X3-C 231124. This impacts the function sub4019FC of the file /cgi-bin/firewall.cgi of the component UPNP Handler. Executing a manipulation of the argument UpnpEnabled can lead to stack-based buffer overflow. It is possible to launch the attack...