CVE-2023-28206 — An out-of-bounds write issue was addressed with improved input validation.¶

Key facts

CVE-2023-28206 is a High (8.6) vulnerability: An out-of-bounds write issue was addressed with improved input validation.. This entry ships a detection-only PoC and a Docker test lab. It is on the CISA Known Exploited Vulnerabilities (KEV) catalog (added 2023-04-10), confirming active exploitation in the wild.

Actively exploited — on the CISA KEV catalog

CVE-2023-28206 is listed on the CISA Known Exploited Vulnerabilities (KEV) catalog (added 2023-04-10), confirming exploitation in the wild. Federal remediation deadline: 2023-05-01. Prioritise patching and deploy the detection and prevention rules below.


CVE	CVE-2023-28206
Severity	High (8.6)
CISA KEV	Actively exploited (added 2023-04-10)
Detection / prevention	—
PoC	poc.py
Source	2023/CVE-2023-28206/

Details¶

English | 한국어

Description¶

An out-of-bounds write issue was addressed with improved input validation. This issue is fixed in macOS Monterey 12.6.5, iOS 16.4.1 and iPadOS 16.4.1, macOS Ventura 13.3.1, iOS 15.7.5 and iPadOS 15.7.5, macOS Big Sur 11.7.6. An app may be able to execute arbitrary code with kernel privileges. Apple is aware of a report that this issue may have been actively exploited.

Vulnerability Details¶

Property	Value
CVE ID	CVE-2023-28206
Type	RCE
CVSS Score	8.6

Proof of Concept¶

Download¶

# Download PoC script
curl -O https://raw.githubusercontent.com/fankh/vulnerability-poc/main/2023/CVE-2023-28206/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-2023-28206

# 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://support.apple.com/en-us/HT213720
https://support.apple.com/en-us/HT213721
https://support.apple.com/en-us/HT213723
https://support.apple.com/en-us/HT213724
https://support.apple.com/en-us/HT213725
https://support.apple.com/en-us/HT213720
https://support.apple.com/en-us/HT213721
https://support.apple.com/en-us/HT213723
https://support.apple.com/en-us/HT213724
https://support.apple.com/en-us/HT213725
https://www.cisa.gov/known-exploited-vulnerabilities-catalog?field_cve=CVE-2023-28206

Generated by PoC Generator on 2026-07-12T00:26:44.432171886

Frequently asked questions¶

What is CVE-2023-28206?¶

CVE-2023-28206 is a High (8.6) vulnerability: An out-of-bounds write issue was addressed with improved input validation.. This entry ships a detection-only PoC and a Docker test lab. It is on the CISA Known Exploited Vulnerabilities (KEV) catalog (added 2023-04-10), confirming active exploitation in the wild.

How do I detect CVE-2023-28206?¶

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-2023-28206?¶

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-2023-28206 actively exploited?¶

Yes. CVE-2023-28206 is on the CISA Known Exploited Vulnerabilities (KEV) catalog, added 2023-04-10, which means it has been exploited in the wild. CISA set a federal remediation deadline of 2023-05-01. Prioritise patching and deploy the detection and prevention rules above.

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