CVE-2025-20124 PoC — Cisco Identity Services Engine Java Deserialization Vulnerability

Source

https://github.com/137f/Cisco-ISE-3.0---Remote-Code-Execution-RCE-

Associated Vulnerability

Title:Cisco Identity Services Engine Java Deserialization Vulnerability (CVE-2025-20124)
Description:A vulnerability in an API of Cisco ISE could allow an authenticated, remote attacker to execute arbitrary commands as the root user on an affected device. This vulnerability is due to insecure deserialization of user-supplied Java byte streams by the affected software. An attacker could exploit this vulnerability by sending a crafted serialized Java object to an affected API. A successful exploit could allow the attacker to execute arbitrary commands on the device and elevate privileges. Note: To successfully exploit this vulnerability, the attacker must have valid read-only administrative credentials. In a single-node deployment, new devices will not be able to authenticate during the reload time.

Description

Esse script explora a vulnerabilidade CVE-2025-20124 — uma falha de Java Deserialization no Cisco ISE (Identity Services Engine) que permite Remote Code Execution (RCE).

Readme

# CVE-2025-20124 – Cisco ISE 3.0 Java Deserialization Remote Code Execution (RCE)

## 📌 Descrição
Este exploit demonstra a exploração da vulnerabilidade **CVE-2025-20124** no **Cisco Identity Services Engine (ISE)**, onde um endpoint interno de desserialização Java aceita objetos maliciosos enviados pelo cliente, permitindo **execução remota de comandos (RCE)**.

A falha está na ausência de validação durante a desserialização de objetos Java, permitindo que um invasor autenticado envie um *payload* que, ao ser processado, executa comandos arbitrários no sistema.

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## 🚨 Impacto
- Execução remota de comandos no servidor Cisco ISE
- Possível tomada de controle total do appliance
- Escalonamento para comprometimento da rede corporativa

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## 🔍 Detalhes Técnicos
- **Produto afetado**: Cisco ISE 3.0
- **Vulnerabilidade**: Java Deserialization sem validação
- **CVE**: CVE-2025-20124
- **Autenticação**: Necessária (session token válido)
- **Vetor de ataque**: HTTP POST para `/api/v1/admin/deserializer` com objeto Java serializado em Base64
- **Exploração**: Uso de *gadget chains* para execução de comandos

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## 📦 Requisitos
- Python 3.x
- Bibliotecas:
  ```bash
  pip install requests>=2.25.0 urllib3>=1.26.0

## Usage

python3 CVE-2025-20124.py --url https://ise.target.com --session TOKEN --cmd "id"

## Contact
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File Snapshot


 [4.0K]  /data/pocs/e95d18d644e6a8c4cea1008f0d80a361e760f6a5
├── [2.9K]  exploit.py
└── [1.5K]  README.md

0 directories, 2 files

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