Vulnerability Description
A security flaw has been discovered in TOTOLINK A800R 4.1.2cu.5137_B20200730. The impacted element is the function setIpQosRules of the file /cgi-bin/cstecgi.cgi of the component firewall.so. The manipulation of the argument Comment results in stack-based buffer overflow. The attack can be executed remotely. The exploit has been released to the public and may be used for attacks.
CVSS Score
HIGH
Related Weaknesses (CWE)
References
- https://github.com/panda666-888/vuls/blob/main/totolink/a800r/setIpQosRules.md
- https://vuldb.com/cve/CVE-2026-19811
- https://vuldb.com/submit/869425
- https://vuldb.com/vuln/389947
- https://vuldb.com/vuln/389947/cti
- https://www.totolink.net/
FAQ
What is CVE-2026-19811?
CVE-2026-19811 is a vulnerability with a CVSS score of 8.8 (HIGH). A security flaw has been discovered in TOTOLINK A800R 4.1.2cu.5137_B20200730. The impacted element is the function setIpQosRules of the file /cgi-bin/cstecgi.cgi of the component firewall.so. The mani...
How severe is CVE-2026-19811?
CVE-2026-19811 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-2026-19811?
Check the references section above for vendor advisories and patch information. Review vendor security bulletins for remediation guidance.