CVE-2025-20281 PoC — Cisco ISE API Unauthenticated Remote Code Execution Vulnerability

Description

This script checks for the presence of the **CVE-2025-20281** vulnerability in Cisco Identity Services Engine (ISE) and ISE-PIC, which allows **unauthenticated remote code execution (RCE)** as root due to insufficient input validation in a specific API.

Readme

# CVE-2025-20281 - Cisco ISE RCE Vulnerability Checker

This script checks for the presence of the **CVE-2025-20281** vulnerability in Cisco Identity Services Engine (ISE) and ISE-PIC, which allows **unauthenticated remote code execution (RCE)** as root due to insufficient input validation in a specific API.

**This tool is intended for authorized security testing and educational purposes only. Do not use it against systems you do not own or have permission to test.**

## About the Vulnerability

**CVE-2025-20281** allows an **unauthenticated, remote attacker** to execute arbitrary commands as root on the underlying OS by submitting a specially crafted API request. The flaw is due to **improper validation of user-supplied input**.

- **Attack Vector:** Remote
- **Privileges Required:** None
- **Impact:** Remote Code Execution (root)
- **Affected Products:** Cisco ISE, Cisco ISE-PIC (specific versions)

## Features

- Sends a crafted payload to simulate code execution attempts
- Detects possible signs of vulnerability
- Simple command-line usage
- No authentication required

## Requirements

- Python 3.x
- `requests` library  
  Install via:
  ```bash
  pip install requests
  ```

## Usage

```bash
python check_cve_2025_20281.py https://<TARGET-IP-OR-DOMAIN>
```

### Example:

```bash
python check_cve_2025_20281.py https://192.168.1.100
```

## Interpreting Results

- `[!!!] POSIBLE VULNERABILIDAD DETECTADA` — Exploit attempt likely succeeded or triggered a revealing response.
- `[*] Server responded with error` — Possible indicator of payload processing.
- `[-] No abnormal behavior detected` — Target may not be vulnerable or is patched.

## File Structure

```
.
├── check_cve_2025_20281.py
├── README.md
├── requirements.txt
└── .gitignore
```

## Disclaimer

This script is provided **as-is** for **research and professional pentesting**. The authors are not responsible for any misuse or damages caused by this tool.

## 🔗 References

- [Cisco Security Advisory for CVE-2025-20281](https://tools.cisco.com/security/center/)
- [MITRE CVE Record](https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2025-20281)

## 👨‍💻 Author

**Grupo Oruss** – — Joy Bassett (@Division81),  
[https://www.grupooruss.com](https://www.grupooruss.com)

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