AUGUST 14, 2026
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Case File

CVE-2026-19812

HIGH · CVSS 8.8 Public Exploit

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

CyberRota Analysis

AI-Generated

TOTOLINK A800R version 4.1.2cu.5137_B20200730 is vulnerable due to a stack-based buffer overflow in the UploadCustomModule function of the /cgi-bin/cstecgi.cgi file, which can be exploited remotely. This vulnerability has a high severity rating and could allow attackers to execute arbitrary code, potentially compromising the device. Organizations using this router should prioritize patching or mitigating this vulnerability to prevent exploitation.

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-2026-19812
Severity
HIGH
CVSS
8.8
EPSS
N/A

Original NVD Description

A weakness has been identified in TOTOLINK A800R 4.1.2cu.5137_B20200730. This affects the function UploadCustomModule of the file /cgi-bin/cstecgi.cgi of the component product.so. This manipulation of the argument File causes stack-based buffer overflow. The attack is possible to be carried out remotely. The exploit has been made available to the public and could be used for attacks.