{
 "license": "CC-BY-4.0",
 "attribution": "Fide AI, Agentic Cyber Explorer",
 "url": "https://agentic-cyber-explorer.pages.dev/events/google-oss-fuzz-llm-fuzz-targets-2023/",
 "asOf": "2026-09-26",
 "id": "google-oss-fuzz-llm-fuzz-targets-2023",
 "date": "2023-08-16",
 "datePrecision": "day",
 "title": "Google reports LLM-written fuzz targets raise OSS-Fuzz code coverage in early experiments",
 "lane": "defense",
 "kind": "paper",
 "summary": "Google's open source security team reports an experiment connecting OSS-Fuzz to an LLM that writes new fuzz targets for under-fuzzed code and revises them when they fail to compile. Google reports coverage gains of 1.5% to 31% across sample projects, and that an LLM-generated target rediscovered an already-known OpenSSL vulnerability in code that previously lacked fuzzing coverage.",
 "whyItMatters": "It is an early documented use of LLMs to automate a defensive testing step that maintainers usually do by hand.",
 "actors": [
  "google-open-source-security"
 ],
 "topics": [
  "vulnerability-discovery"
 ],
 "atlas": [],
 "artifacts": [
  "oss-fuzz"
 ],
 "sources": [
  {
   "url": "https://security.googleblog.com/2023/08/ai-powered-fuzzing-breaking-bug-hunting.html",
   "publisher": "Google Security Blog",
   "title": "AI-Powered Fuzzing: Breaking the Bug Hunting Barrier",
   "date": "2023-08-16",
   "type": "primary",
   "accessed": "2026-09-25"
  }
 ],
 "keyFacts": [
  {
   "fact": "Sample projects gained between 1.5% and 31% code coverage from LLM-generated fuzz targets; tinyxml2 went from 38% to 69% line coverage.",
   "locator": "Section 'Hey LLM, fuzz this project for me'"
  },
  {
   "fact": "In OpenSSL, an LLM-generated target rediscovered CVE-2022-3602 in code without prior fuzzing coverage; Google notes this was not a new vulnerability.",
   "locator": "Same section"
  },
  {
   "fact": "OSS-Fuzz covers around 30% of an open source project's code on average, per the post.",
   "locator": "Section 'LLM-aided fuzzing'"
  }
 ],
 "significance": 3,
 "fideQuestions": [],
 "methods": [
  "ai-vulnerability-discovery"
 ],
 "review": "assistant-drafted",
 "addedOn": "2026-09-25"
}