CVE-2026-19814

Description

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.

CVSS Vector

References

• https://github.com/panda666-888/vuls/blob/main/totolink/a800r/setMacQos.md
• https://vuldb.com/cve/CVE-2026-19814
• https://vuldb.com/submit/869431
• https://vuldb.com/vuln/389950
• https://vuldb.com/vuln/389950/cti
• https://www.totolink.net/