A bash script that analyzes executable files to check security properties like PIE, RELRO, canaries, ASLR, and Fortify Source protections.
Checked October 2026.
Checksec is a bash script designed to analyze executable files and assess their security properties and hardening features.
The tool examines various security mechanisms implemented in binaries, including:
The script provides modular functionality with configurable output formats, including CLI and JSON options. Recent updates have enhanced the tool's capabilities to include Clang Control Flow Integrity (CFI) and safe stack checks through an extended analysis mode.
Checksec operates through command-line interface with getopts-based option parsing, allowing flexible parameter ordering. The tool includes cryptographic verification features using both Cosign and OpenSSL signature validation to ensure integrity.
Originally developed by Tobias Klein, the tool focuses specifically on Linux executables and does not support macOS Mach-O binaries or OSX kernel analysis. The script serves as a security assessment utility for developers and security professionals evaluating binary hardening implementations.
No core features are listed for this product yet, so check the vendor's documentation for the full feature list.
No integrations are listed for this product yet. Check the vendor's documentation, or ask the vendor which integrations and APIs it supports.
Common questions about Checksec: features, pricing and alternatives.
Checksec is a product in the Vulnerability Assessment category. It covers Security Hardening, Linux and Binary Analysis.
Checksec is free. Download and setup instructions are at https://github.com/slimm609/checksec.
Alternatives to Checksec listed on CybersecTools:
Compare all Checksec alternatives at https://cybersectools.com/alternatives/checksec
Checksec is available as on-premises software. It is listed for startups, small businesses, mid-market companies and enterprises. It is free.
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