GoKawiilResearchers use AI-assisted fuzzing tool to uncover division-by-zero bug in FFmpeg
A team built a fuzzer with heavy AI code-generation assistance ('vibecoding') and used it to discover a division-by-zero vulnerability in FFmpeg, the widely used open-source multimedia framework. The bug was found through automated input generation and crash analysis rather than manual code review.
GoKawiil's interpretation of the reporting above, not reported fact.
FFmpeg underpins countless media applications, browsers, and streaming services, so a crash-inducing bug like this could affect stability across a huge swath of software. The find also highlights how AI-assisted tooling is lowering the barrier for security researchers to build effective fuzzers for complex, widely deployed codebases.
- A division-by-zero bug was found in FFmpeg using an AI-assisted fuzzing tool.
- The discovery shows AI coding assistance can accelerate vulnerability research in large open-source projects.
- FFmpeg's broad use means such bugs can have wide-reaching stability implications.
Source: code.ffmpeg.org — Darío Clavijo, 2026-08-27
Published there as: “We found a division by zero bug in FFmpeg with a vibecoded fuzzer”
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