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

Source

https://github.com/Yuri08loveElaina/CVE-2025-20124_and_CVE-2025-20125

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

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.

Readme

## 🗒️ How to use ##

- ## cve‑20124 (RCE): ##

> python3 Exploit.py --url https://ise.example.com 
--Session your_ISE_Session_Token --DESER-CMD "Touch /TMP /PWWNED"

- ## cve‑20125 (authorized bypass): ## 

>python3 Exploit.py --url https://ise.example.com 
--Session your_ISE_Session_Token --Bbypass

- ⚠️ Important note
Both drive require an ISE administrator to log in (the administrator only read is enough)

- This is only an example; In the actual  you need:

> The Java utility chain is true to sequentially self -transparent CVE‑201224.

> Final score authentication (using assumption/API/V1/Admin/*).


🔍 Reference source
Cisco ADVISORY CVE‑20124 & Cve‑20125 - Receive RCE level & ignore the required authentication.

File Snapshot


 [4.0K]  /data/pocs/66bc5c0ff8e8e90286351aff80c19e1501a8eda6
├── [2.9K]  Exploit.py
└── [ 748]  README.md

0 directories, 2 files

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