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Mythril

Symbolic execution analyser for EVM bytecode

Security analysis tool from Consensys Diligence that uses symbolic execution and SMT solving to find vulnerabilities in EVM bytecode.

Open sourceMIT
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Homepage of Mythril
Official repository page, captured by ThreatWire.

What Mythril does

Mythril explores the possible execution paths of EVM bytecode with symbolic execution and an SMT solver to detect issues such as integer overflows, unprotected self-destruct, reentrancy patterns and unchecked calls. It can analyse Solidity source, compiled bytecode or contracts deployed on-chain.

Analysis depth is configurable through transaction count and timeouts, trading speed for coverage.

Key features

  • Symbolic execution with SMT solving
  • Solidity source, bytecode and on-chain targets
  • Configurable transaction depth
  • Detection modules for common SWC issues
  • JSON and Markdown reports

Licence

MIT · MIT License · Open source

Checked by ThreatWire against the repository's licence file on 2026-10-20. GitHub detects: MIT.

Security of Mythril itself

No published advisory found for Mythril in GitHub repository advisories and OSV.dev. That does not mean the tool has no vulnerabilities.

Sources: GitHub repository advisories, OSV.dev · checked 2026-10-20.

Categories and tags

Smart contract security#evm#symbolic-execution#solidity#python#security-analysis#ethereum#blockchain#smart-contracts#program-analysis

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