Grey-Box Fuzzing

Technique

First seen 6/19/2026

Last seen 8/5/2026

Evidence 20 chunks

NEIGHBORHOOD

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JQF ← implements 95% 2e

JQF is a greybox fuzzing framework that instruments JVM bytecode for collecting code coverage.

Code Coverage uses → 95% 2e

Greybox fuzzing uses code coverage as feedback to guide mutation of test inputs.

WhisperFuzz compares with → 90% 2e

WhisperFuzz is compared with grey-box fuzzing approaches that cannot locate timing vulnerability root causes.

Black-Box Fuzzing extends → 90% 2e

Greybox fuzzing lies between whitebox and blackbox fuzzing, extending blackbox with lightweight analysis.

Coverage Feedback uses → 95% 1e

Grey-box fuzzing receives architectural-level coverage feedback.

AFL ← implements 98% 1e

AFL is classified as a grey-box fuzzer.

Grey-box fuzzing approaches use performance counters to identify potential timing vulnerabilities.

CGF is a specialization of greybox fuzzing that uses code coverage as feedback.

Greybox fuzzing is another name for coverage-guided mutation-based fuzzing.

The paper contrasts SiliFuzz with greybox fuzzing applied to RTL models.