---
title: "All You Need Is A Fuzzing Brain: An LLM-Powered System for Automated Vulnerability Detection and Patching (arXiv:2509.07225) | Papers With Code Cyber"
description: "Our team, All You Need Is A Fuzzing Brain, was one of seven finalists in DARPA's Artificial Intelligence Cyber Challenge (AIxCC), placing fourth in the final round. During…"
canonical: "https://paperswithcode-cyber.com/paper/2509.07225"
type: "paper"
---

# All You Need Is A Fuzzing Brain: An LLM\-Powered System for Automated Vulnerability Detection and Patching

arXiv:2509\.07225 · 2025-09-08

Authors: Sheng, Ze, Xu, Qingxiao, Huang, Jianwei, Woodcock, Matthew, Huang, Heqing, Donaldson, Alastair F\., Gu, Guofei, Huang, Jeff

## Abstract

Our team, All You Need Is A Fuzzing Brain, was one of seven finalists in DARPA's Artificial Intelligence Cyber Challenge \(AIxCC\), placing fourth in the final round\. During the competition, we developed a Cyber Reasoning System \(CRS\) that autonomously discovered 28 security vulnerabilities \- including six previously unknown zero\-days \- in real\-world open\-source C and Java projects, and successfully patched 14 of them\. The complete CRS is open source at https://github\.com/o2lab/afc\-crs\-all\-you\-need\-is\-a\-fuzzing\-brain\. This paper provides a detailed technical description of our CRS, with an emphasis on its LLM\-powered components and strategies\. Building on AIxCC, we further introduce a public leaderboard for benchmarking state\-of\-the\-art LLMs on vulnerability detection and patching tasks, derived from the AIxCC dataset\. The leaderboard is available at https://o2lab\.github\.io/FuzzingBrain\-Leaderboard/\.

## Tasks

- [Fuzzing and test generation](https://paperswithcode-cyber.com/tasks/cyberintel-fuzzing)
- [Vulnerability detection and triage](https://paperswithcode-cyber.com/tasks/cyberintel-vulnerability-analysis)
- [Vulnerability repair](https://paperswithcode-cyber.com/tasks/cyberintel-repair)

## Code repositories

- [fuzzingbrain/afc\-crs\-all\-you\-need\-is\-a\-fuzzing\-brain](https://github.com/fuzzingbrain/afc-crs-all-you-need-is-a-fuzzing-brain)

## Paper resources

- [Abstract page](https://arxiv.org/abs/2509.07225v1)
- [PDF](https://arxiv.org/pdf/2509.07225v1.pdf)