Researchers Used a Public OpenAI Model to Build a $250,000 Chrome Full-Chain Exploit in Six Days
AI-summarised brief · reviewed before publication
Security firm XBOW used OpenAI’s publicly available GPT‑5.6 Sol model to chain three previously unknown Chrome bugs into a full‑chain exploit in six days. The attack runs arbitrary Windows code when a user merely loads a web page, bypassing Chrome’s nested sandboxes without clicks or downloads. Google confirmed and patched all three flaws—two in Chrome 152.0.7977.65 and 152.0.7977.82, and a WebP‑related V8 bug—after which XBOW received the program’s maximum $250,000 reward. XBOW estimates the AI‑driven effort cost about $40,000 in compute. Researchers directed the AI to search source code, generate proofs of concept and draft exploit code, while humans selected targets and assembled the final chain. The work coincided with Black Hat and DEF CON in early August for the cybersecurity community globally.
💡 Why It Matters
- · The cheap, six‑day AI‑crafted Chrome exploit demonstrates that high‑impact browser attacks are no longer limited to well‑funded groups, urging defenders to accelerate patch cycles and incorporate AI threat modeling.