AUGUST 14, 2026
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Case File

CVE-2026-19813

HIGH · CVSS 8.8 Public Exploit

Source: NVD + CISA KEV + EPSS · Published 2026-08-14 · Last synced 2026-08-14

CyberRota Analysis

AI-Generated

A stack-based buffer overflow vulnerability exists in the TOTOLINK A800R router's firewall component, specifically in the setMacFilterRules function of the cgi-bin interface. This flaw allows remote attackers to manipulate input arguments, potentially leading to arbitrary code execution. Organizations using this router model should prioritize patching or mitigating this vulnerability due to its high severity and the availability of public exploit information.

Public Exploit Signal

A public exploit, PoC, GitHub repository or Metasploit reference was detected for this CVE.

Detected Signals
exploit
GitHub PoC Links

Note: these links are listed for security research and verification purposes only.

CVE
CVE-2026-19813
Severity
HIGH
CVSS
8.8
EPSS
N/A

Original NVD Description

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.