zzuf ☆
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Description:
Transparent application input fuzzer
Type: Formula  |  Tracked Since: Dec 28, 2025
Links: Homepage  |  formulae.brew.sh
Category: Security
Tags: fuzzing security testing debugging input-corruption
Install: brew install zzuf
About:
Zzuf is a transparent application input fuzzer that runs a target program with modified standard input. It automatically corrupts data streams to discover bugs like crashes, hangs, or security vulnerabilities in file parsers and network applications.
Key Features:
  • Intercepts and mutates file descriptor I/O
  • Supports both local files and network streams
  • Configurable mutation ratios and seeding
  • Multi-purpose tool for fuzzing, debugging, and monitoring
Use Cases:
  • Finding security vulnerabilities in file parsers
  • Testing network protocol robustness
  • Identifying edge cases in data processing applications
Alternatives:
  • AFL – AFL uses compile-time instrumentation, while Zzuf operates at runtime without recompilation
  • libFuzzer – LibFuzzer requires linking, Zzuf works with any existing binary
Version History
Detected Version Rev Change Commit
Sep 11, 2025 7:23pm 0 VERSION_BUMP 2214d04f
Nov 19, 2024 11:59pm 0 VERSION_BUMP e1cd4897
Sep 11, 2024 2:49pm 0 VERSION_BUMP 358af5f2
Jan 2, 2023 9:05am 0 VERSION_BUMP e12507bc
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