AUGUST 14, 2026
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Case File

CVE-2026-19814

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 setMacQos function of the firewall component in TOTOLINK A800R firmware version 4.1.2cu.5137_B20200730, allowing remote attackers to manipulate the macAddress argument. Successful exploitation could lead to arbitrary code execution, posing a significant risk to network security. Organizations using this firmware should prioritize patching to mitigate potential attacks.

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-2026-19814
Severity
HIGH
CVSS
8.8
EPSS
N/A

Original NVD 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.