# Introduction to Fuzzing ESP-IDF components

DevFeed: [Introduction to Fuzzing ESP-IDF components](<https://devfeed.tech/articles/introduction-to-fuzzing-esp-idf-components-13743.md>)

Original publisher: [Read original article](<https://developer.espressif.com/blog/2026/01/fuzzing/>)

Author: John Lee

Published: 2026-01-07T00:00:00Z

Content type: tutorial

Language: en

Sources: [Blog on Developer Portal](<https://devfeed.tech/sources/blog-on-developer-portal.md>)

Topics: [ESP-IDF](<https://devfeed.tech/topics/esp-idf.md>), [Fuzzing/Fuzz testing](<https://devfeed.tech/topics/fuzzing.md>), [Testing](<https://devfeed.tech/topics/testing.md>), [Vulnerabilities](<https://devfeed.tech/topics/vulnerabilities.md>), [c/c++](<https://devfeed.tech/topics/c-c-plus-plus.md>)

Tags: [blog](<https://devfeed.tech/tags/blog.md>), [c-c-plus-plus](<https://devfeed.tech/tags/c-c-plus-plus.md>), [c-plus-plus](<https://devfeed.tech/tags/c-plus-plus.md>), [component](<https://devfeed.tech/tags/component.md>), [embedded](<https://devfeed.tech/tags/embedded.md>), [esp-idf](<https://devfeed.tech/tags/esp-idf.md>), [fuzzing](<https://devfeed.tech/tags/fuzzing.md>), [how-to](<https://devfeed.tech/tags/how-to.md>), [security](<https://devfeed.tech/tags/security.md>), [testing](<https://devfeed.tech/tags/testing.md>), [vulnerabilities](<https://devfeed.tech/tags/vulnerabilities.md>), [vulnerability](<https://devfeed.tech/tags/vulnerability.md>)

## AI overview

This article introduces fuzzing for ESP-IDF components and embedded libraries. It explains how to fuzz host-compiled code with sanitizers, compares black-box, grey-box, and white-box approaches, and outlines workflows using a basic mutator, AFL++, and protocol-focused harnesses.

## Source excerpt

This article introduces fuzzing -- a technique for finding vulnerabilities -- and demonstrates practical workflows and lessons learned for ESP-IDF components and embedded libraries in general.