# ysoserial.net

ysoserial.net is a Penetration Testing product. It runs on-premises. Pricing is free.

A payload generator that creates malicious deserialization payloads for testing .NET applications against insecure deserialization vulnerabilities.

Checked October 2026.

## What is ysoserial.net?

ysoserial.net is a deserialization payload generator designed for .NET applications and frameworks.

The tool creates malicious payloads that exploit deserialization vulnerabilities in various .NET formatters including BinaryFormatter, SoapFormatter, and NetDataContractSerializer.

It generates serialized objects that can execute arbitrary code when deserialized by vulnerable .NET applications, making it useful for penetration testing and security research.

The tool supports multiple .NET serialization formats and can be used to test applications for insecure deserialization flaws that could lead to remote code execution.

Tags: .NET, Payload Generation

## Quick facts

- Category: [Offensive Security](https://cybersectools.com/categories/offensive-security-testing) · [Penetration Testing](https://cybersectools.com/categories/pentesting-tools)
- Deployment: On-Premises
- Company size fit: Mid-Market, Enterprise
- Pricing model: Free
- GitHub stars: 3,544
- Website: github.com

## ysoserial.net FAQ

### What is ysoserial.net?

ysoserial.net is a product in the Penetration Testing category. It covers .NET and Payload Generation.

### What is the pricing for ysoserial.net?

ysoserial.net is free. Download and setup instructions are at https://github.com/pwntester/ysoserial.net/.

### What are alternatives to ysoserial.net?

Alternatives to ysoserial.net listed on CybersecTools:

1. [Managed Autonomous Pentesting (MAP)](https://cybersectools.com/tools/hackurity-art-stack) - Managed continuous autonomous pentesting using payload-less exploitation and attack paths (Commercial)
2. [XBOW Captcha Bypass Tool](https://cybersectools.com/tools/xbow-captcha-bypass-tool) - AI-powered automated penetration testing platform for vulnerability discovery (Commercial)
3. [Burp Suite Professional](https://cybersectools.com/tools/burp-suite-professional) - A web application security testing platform that combines manual and automated testing tools for conducting comprehensive security assessments and penetration testing. (Commercial)
4. [FireCompass AI-powered Pen Testing](https://cybersectools.com/tools/firecompass-ai-powered-pen-testing) - AI-powered automated pen testing & continuous red teaming platform (Commercial)
5. [ImmuniWeb® On-Demand](https://cybersectools.com/tools/immuniwebr-on-demand) - ImmuniWeb® On-Demand is a web application penetration testing platform that combines AI-powered automation with manual security testing to provide comprehensive vulnerability assessments and compliance reporting. (Commercial)

Compare all ysoserial.net alternatives at [https://cybersectools.com/alternatives/ysoserialnet](https://cybersectools.com/alternatives/ysoserialnet)

### What deployment and organization size does ysoserial.net fit?

ysoserial.net is available as on-premises software. It is listed for mid-market companies and enterprises. It is free.

## Compare ysoserial.net with similar solutions

- [ysoserial.net vs Managed Autonomous Pentesting (MAP)](https://cybersectools.com/compare/hackurity-art-stack-vs-ysoserialnet)
- [ysoserial.net vs XBOW Captcha Bypass Tool](https://cybersectools.com/compare/xbow-captcha-bypass-tool-vs-ysoserialnet)
- [ysoserial.net vs Burp Suite Professional](https://cybersectools.com/compare/burp-suite-professional-vs-ysoserialnet)

All alternatives to ysoserial.net: [/alternatives/ysoserialnet](https://cybersectools.com/alternatives/ysoserialnet)

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Source: https://cybersectools.com/tools/ysoserialnet

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