CVE-2026-19814 TOTOLINK A800R firewall.so cstecgi.cgi setMacQos stack-based overflow

A vulnerability was detected in TOTOLINK A800R 4.1.2cu.5137B20200730. Affected is the function setMacQos of the file /cgi-bin/cstecgi.cgi of the component firewall.so. Performing a manipulation of the argument macAddress results in stack-based buffer overflow. It is possible to initiate the attac...