CVE-2026-19814 [HIGH] – A vulnerability was detected in TOTOLINK A800R 4.1.2cu.5137_B20200730. Affected is the fun

A vulnerability was detected in TOTOLINK A800R 4.1.2cu.5137_B20200730. 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 attack remotely. The exploit is now public and may be used.