Fuzzing primarily helps identify which type of software weakness?

• A. Performance issues
• B. Input validation vulnerabilities
• C. Race conditions
• D. Memory leaks

Answer: (B)

Fuzzing focuses on how software processes external data. By blasting a program with large volumes of random, malformed, or unexpected inputs, it stress-tests input handling and parsing paths to see if data is properly validated, sanitized, or safely rejected. When input validation is weak, these unusual inputs can cause crashes, incorrect behavior, or security flaws such as buffer overflows or improper data handling, revealing weaknesses in how the software accepts and processes input. While fuzzing can uncover other issues in edge cases, its primary strength lies in exposing input validation weaknesses rather than performance problems, race conditions, or memory leaks.