CVE-2025-42944 PoC — Insecure Deserialization vulnerability in SAP Netweaver (RMI-P4)

Description

Detection for CVE-2025-42944

Readme

# CVE-2025-42944

Due to a deserialization vulnerability in SAP NetWeaver, an unauthenticated attacker could exploit the system through the RMI-P4 module by submitting malicious payload to an open port. The deserialization of such untrusted Java objects could lead to arbitrary OS command execution, posing a high impact to the application's confidentiality, integrity, and availability.

## How does this detection method work?

This detection method works by sending a GET request to identify SAP NetWeaver Application Server instances through their server headers, extracting the version number using regex, and then using a DSL matcher to check if the detected version is 7.50 or below, which would indicate potential vulnerability to the deserialization exploit in the RMI-P4 module.

## How do I run this script?

1. Download Nuclei from [here](https://github.com/projectdiscovery/nuclei)
2. Copy the template to your local system
3. Run the following command: `nuclei -u https://yourHost.com -t template.yaml` 

### Example Output

<img width="646" height="260" alt="Screenshot 2025-09-11 at 11 53 27" src="https://github.com/user-attachments/assets/36ffc079-c002-446d-bb9b-b029e052f3ca" />



## References

- https://nvd.nist.gov/vuln/detail/CVE-2025-42944
- https://me.sap.com/notes/3634501
- https://www.bleepingcomputer.com/news/security/sap-fixes-maximum-severity-netweaver-command-execution-flaw/


## Disclaimer

Use at your own risk, I will not be responsible for illegal activities you conduct on infrastructure you do not own or have permission to scan.

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## Contact

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