CVE-2020-5722 — The HTTP interface of the Grandstream UCM6200 series is vulnerable to an unauthenticated…¶

Key facts

CVE-2020-5722 is a Critical (9.8) vulnerability: The HTTP interface of the Grandstream UCM6200 series is vulnerable to an unauthenticated…. This entry ships a detection-only PoC and a Docker test lab. It is on the CISA Known Exploited Vulnerabilities (KEV) catalog (added 2022-01-28), confirming active exploitation in the wild.

Actively exploited — on the CISA KEV catalog

CVE-2020-5722 is listed on the CISA Known Exploited Vulnerabilities (KEV) catalog (added 2022-01-28), confirming exploitation in the wild. Federal remediation deadline: 2022-07-28. Prioritise patching and deploy the detection and prevention rules below.


CVE	CVE-2020-5722
Severity	Critical (9.8)
CISA KEV	Actively exploited (added 2022-01-28)
Detection / prevention	—
PoC	poc.py
Source	2020/CVE-2020-5722/

Details¶

English | 한국어

Description¶

The HTTP interface of the Grandstream UCM6200 series is vulnerable to an unauthenticated remote SQL injection via crafted HTTP request. An attacker can use this vulnerability to execute shell commands as root on versions before 1.0.19.20 or inject HTML in password recovery emails in versions before 1.0.20.17.

Vulnerability Details¶

Property	Value
CVE ID	CVE-2020-5722
Type	SQLI
CVSS Score	9.8

Proof of Concept¶

Download¶

# Download PoC script
curl -O https://raw.githubusercontent.com/fankh/vulnerability-poc/main/2020/CVE-2020-5722/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-2020-5722

# 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¶

http://packetstormsecurity.com/files/156876/UCM6202-1.0.18.13-Remote-Command-Injection.html
http://packetstormsecurity.com/files/165708/Grandstream-UCM62xx-IP-PBX-sendPasswordEmail-Remote-Code-Execution.html
https://www.tenable.com/security/research/tra-2020-15
http://packetstormsecurity.com/files/156876/UCM6202-1.0.18.13-Remote-Command-Injection.html
http://packetstormsecurity.com/files/165708/Grandstream-UCM62xx-IP-PBX-sendPasswordEmail-Remote-Code-Execution.html
https://www.tenable.com/security/research/tra-2020-15
https://www.cisa.gov/known-exploited-vulnerabilities-catalog?field_cve=CVE-2020-5722

Generated by PoC Generator on 2026-07-01T16:26:39.590534074

Frequently asked questions¶

What is CVE-2020-5722?¶

CVE-2020-5722 is a Critical (9.8) vulnerability: The HTTP interface of the Grandstream UCM6200 series is vulnerable to an unauthenticated…. This entry ships a detection-only PoC and a Docker test lab. It is on the CISA Known Exploited Vulnerabilities (KEV) catalog (added 2022-01-28), confirming active exploitation in the wild.

How do I detect CVE-2020-5722?¶

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-2020-5722?¶

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-2020-5722 actively exploited?¶

Yes. CVE-2020-5722 is on the CISA Known Exploited Vulnerabilities (KEV) catalog, added 2022-01-28, which means it has been exploited in the wild. CISA set a federal remediation deadline of 2022-07-28. Prioritise patching and deploy the detection and prevention rules above.

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