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CVE-2026-79912 — A vulnerability was detected in TOTOLINK N600R 4.3.0cu.7647_B20210106.

Key facts

CVE-2026-79912 is a High (8.3) vulnerability: A vulnerability was detected in TOTOLINK N600R 4.3.0cu.7647_B20210106.. This entry ships a detection-only PoC and a Docker test lab.
CVE CVE-2026-79912
Severity High (8.3)
Detection / prevention —
PoC poc.py
Source 2026/CVE-2026-79912/

Details

English | 한국어

Description

A vulnerability was detected in TOTOLINK N600R 4.3.0cu.7647_B20210106. The impacted element is the function getCurrentTime of the file /cgi-bin/cstecgi.cgi. Performing a manipulation of the argument ntp_server results in command injection. The attack can be initiated remotely. The exploit is now public and may be used.

Vulnerability Details

Property Value
CVE ID CVE-2026-79912
Type COMMAND_INJECTION
CVSS Score 8.3

Proof of Concept

Download

# Download PoC script
curl -O https://raw.githubusercontent.com/fankh/vulnerability-poc/main/2026/CVE-2026-79912/poc.py

Usage

# Run PoC against target
python3 poc.py --target <TARGET_URL>

# With authentication
python3 poc.py --target <TARGET_URL> --username <USER> --password <PASS>

⚠️ Warning: This PoC is for authorized security testing only. It uses detection-only techniques and does not exploit or damage target systems.

Test Lab

This repository includes a Docker-based test environment with both vulnerable and patched applications.

Quick Start

# Clone and navigate to CVE directory
cd CVE-2026-79912

# Start both applications
docker-compose up -d

# Run tests
./run-tests.sh    # Linux/Mac
./run-tests.ps1   # Windows PowerShell

Application Endpoints

Application URL Status
Vulnerable App http://localhost:8080 Shows vulnerability
Patched App http://localhost:8081 Demonstrates fix

Directory Structure

├── README.md           # English documentation
├── README_KO.md        # Korean documentation
├── poc.py              # PoC detection script
├── docker-compose.yml  # Container orchestration
├── run-tests.sh        # Linux/Mac test runner
├── run-tests.ps1       # Windows test runner
├── vulnerable-app/     # Vulnerable version
│   ├── app.py
│   ├── Dockerfile
│   └── requirements.txt
└── patched-app/        # Fixed version
    ├── app.py
    ├── Dockerfile
    └── requirements.txt

References

  • https://github.com/dxz0069/WAVLINK-WN530H4-Command-Injection-in-set_add_routing/blob/main/TOTOLINK_N600R_cstecgi_Time_WiFi_Service_popen_Command_Injection.md
  • https://vuldb.com/cve/CVE-2026-79912
  • https://vuldb.com/submit/881261
  • https://vuldb.com/vuln/395062
  • https://vuldb.com/vuln/395062/cti
  • https://www.totolink.net/

Generated by PoC Generator on 2026-08-26T10:03:56.787557904

Frequently asked questions

What is CVE-2026-79912?

CVE-2026-79912 is a High (8.3) vulnerability: A vulnerability was detected in TOTOLINK N600R 4.3.0cu.7647_B20210106.. This entry ships a detection-only PoC and a Docker test lab.

How do I detect CVE-2026-79912?

Run the detection-only PoC included with this entry against your Docker test lab to confirm whether a target is affected; pair it with your own IDS logging.

How do I block or mitigate CVE-2026-79912?

Upgrade to a fixed version per the vendor advisory; the NVD record lists the affected versions. Use the included PoC to verify your remediation.

For authorized security testing and research only. See the full source and NVD record.