---
id: 1354
title: "Trail of Bits' Buttercup wins 2nd place in AIxCC Challenge"
source_domain: blog.trailofbits.com
source_url: "https://blog.trailofbits.com/2025/08/09/trail-of-bits-buttercup-wins-2nd-place-in-aixcc-challenge/"
published_at: "2025-08-09 14:30"
tags: ["ai-security", "llm", "vulnerability-discovery", "darpa", "automated-patching", "trail-of-bits", "aixcc", "buttercup"]
phying_url: "https://phying.com/item/1354"
lang: en
---

# Trail of Bits' Buttercup wins 2nd place in AIxCC Challenge

## Summary

Trail of Bits won the $3M runner-up prize at DARPA's AI Cyber Challenge (AIxCC), with Buttercup finding 28 vulnerabilities and applying 19 patches across 20 CWEs using only non-reasoning LLMs.

## Intelligence Metadata

- **Sources:** blog.trailofbits.com
- **Published:** 2025-08-09 14:30
- **Original:** https://blog.trailofbits.com/2025/08/09/trail-of-bits-buttercup-wins-2nd-place-in-aixcc-challenge/
- **Phying News:** https://phying.com/item/1354