Skip to content

CVE-2023-6448 — Unitronics VisiLogic before version 9.9.00, used in Vision and Samba PLCs and HMIs, uses…

Key facts

CVE-2023-6448 is a Critical (9.8) vulnerability: Unitronics VisiLogic before version 9.9.00, used in Vision and Samba PLCs and HMIs, uses…. This entry ships a detection-only PoC and a Docker test lab. It is on the CISA Known Exploited Vulnerabilities (KEV) catalog (added 2023-12-11), confirming active exploitation in the wild.

Actively exploited — on the CISA KEV catalog

CVE-2023-6448 is listed on the CISA Known Exploited Vulnerabilities (KEV) catalog (added 2023-12-11), confirming exploitation in the wild. Federal remediation deadline: 2023-12-18. Prioritise patching and deploy the detection and prevention rules below.
CVE CVE-2023-6448
Severity Critical (9.8)
CISA KEV Actively exploited (added 2023-12-11)
Detection / prevention —
PoC poc.py
Source 2023/CVE-2023-6448/

Details

English | 한국어

Description

Unitronics VisiLogic before version 9.9.00, used in Vision and Samba PLCs and HMIs, uses a default administrative password. An unauthenticated attacker with network access can take administrative control of a vulnerable system.

Vulnerability Details

Property Value
CVE ID CVE-2023-6448
Type XSS
CVSS Score 9.8

Proof of Concept

Download

# Download PoC script
curl -O https://raw.githubusercontent.com/fankh/vulnerability-poc/main/2023/CVE-2023-6448/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-2023-6448

# 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://downloads.unitronicsplc.com/Sites/plc/Technical_Library/Unitronics-Cybersecurity-Advisory-2023-001-CVE-2023-6448.pdf
  • https://downloads.unitronicsplc.com/Sites/plc/Visilogic/Version_Changes-Bug_Reports/VisiLogic%209.9.00%20Version%20changes.pdf
  • https://www.cisa.gov/news-events/alerts/2023/11/28/exploitation-unitronics-plcs-used-water-and-wastewater-systems
  • https://www.unitronicsplc.com/cyber_security_vision-samba/
  • https://downloads.unitronicsplc.com/Sites/plc/Technical_Library/Unitronics-Cybersecurity-Advisory-2023-001-CVE-2023-6448.pdf
  • https://downloads.unitronicsplc.com/Sites/plc/Visilogic/Version_Changes-Bug_Reports/VisiLogic%209.9.00%20Version%20changes.pdf
  • https://www.cisa.gov/news-events/alerts/2023/11/28/exploitation-unitronics-plcs-used-water-and-wastewater-systems
  • https://www.unitronicsplc.com/cyber_security_vision-samba/
  • https://www.cisa.gov/known-exploited-vulnerabilities-catalog?field_cve=CVE-2023-6448

Generated by PoC Generator on 2026-06-24T17:16:31.950835919

Frequently asked questions

What is CVE-2023-6448?

CVE-2023-6448 is a Critical (9.8) vulnerability: Unitronics VisiLogic before version 9.9.00, used in Vision and Samba PLCs and HMIs, uses…. This entry ships a detection-only PoC and a Docker test lab. It is on the CISA Known Exploited Vulnerabilities (KEV) catalog (added 2023-12-11), confirming active exploitation in the wild.

How do I detect CVE-2023-6448?

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-2023-6448?

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

Is CVE-2023-6448 actively exploited?

Yes. CVE-2023-6448 is on the CISA Known Exploited Vulnerabilities (KEV) catalog, added 2023-12-11, which means it has been exploited in the wild. CISA set a federal remediation deadline of 2023-12-18. Prioritise patching and deploy the detection and prevention rules above.

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