Vulnerability 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 Score
HIGH
Related Weaknesses (CWE)
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/
FAQ
What is CVE-2026-19814?
CVE-2026-19814 is a vulnerability with a CVSS score of 8.8 (HIGH). 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 th...
How severe is CVE-2026-19814?
CVE-2026-19814 has been rated HIGH with a CVSS base score of 8.8/10. Review the CVSS metrics above for detailed severity breakdown.
Is there a patch for CVE-2026-19814?
Check the references section above for vendor advisories and patch information. Review vendor security bulletins for remediation guidance.