CVE-2026-19813 in A800R

Prediction

by VulDB Data Team • 08/14/2026

A security vulnerability has been detected in TOTOLINK A800R 4.1.2cu.5137_B20200730. This impacts the function setMacFilterRules of the file /cgi-bin/cstecgi.cgi of the component firewall.so. Such manipulation of the argument Comment leads to stack-based buffer overflow. The attack may be performed from remote. The exploit has been disclosed publicly and may be used.

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• Responsible: VulDB
• Moderation: accepted
• Entry: VDB-389949
• CPE: ready
• CWE: CWE-121 (confirmed)
• Exploit: Download
• CVSS: 8.8 (VulDB)
• EPSS: 0.00000
• KEV: no
• Activities: low

Sources

• MITRE: https://www.cve.org/CVERecord?id=CVE-2026-19813
• NVD: https://nvd.nist.gov/vuln/detail/CVE-2026-19813
• CVE Details: https://www.cvedetails.com/cve/CVE-2026-19813/