stephenbradshaw/vulnserver

Health v2 · maintenance only

Flags: no_releases

Adoption not part of the score

1133 stars · 267 forks observed · 2026-08-28

What it is AI-extracted, prompt v1, taxonomy v1, 2026-08-30, confidence not recorded

Vulnserver is a deliberately vulnerable multithreaded Windows TCP server containing multiple subtly different buffer overflow bugs. It is designed purely as a safe target for learning how to discover and exploit software vulnerabilities.

Use cases

• practice finding buffer overflow vulnerabilities
• learn exploit development with a safe target
• test fuzzing tools like SPIKE against a known-vulnerable server
• practice SEH-based and egghunter exploits
• teach reverse engineering and debugging skills
• set up a lab for penetration testing training

When to choose

• you are learning or teaching software exploitation
• you need a legal, intentional target for fuzzing practice
• you want varied buffer overflow challenges in one program

When to avoid

• you need a functional server for production use
• you cannot run Windows binaries
• you want a real-world vulnerable application

Facets

application · maturity maintenance

security penetration-testing http-server security penetration-testing education developer-tools windows cross-platform exploit-development buffer-overflow vulnerable-app fuzzing-target learning-tool tcp-server

Member repositories

For agents

markdown · JSON · MCP: product_card(name="stephenbradshaw/vulnserver")