Fuzzware
Fuzzware is a Linux service for rehosting-based security testing and automated fuzzing of embedded firmware without physical hardware.
What Fuzzware is
Fuzzware is a Linux service for rehosting-based security testing and automated fuzzing of embedded firmware without physical hardware. It analyzes compiled binaries, including closed-source and third-party firmware, so source access is not required. Campaigns examine complete firmware systems, including interacting components, interfaces, and execution paths. Its virtual execution environment automatically manages peripherals, memory mappings, and execution contexts. The described workflow includes technical pre-validation, customer test scoping, an automated fuzzing campaign, and a detailed report. Reports provide contextual execution data, reproducible inputs, severity classifications, and coverage metrics. Firmware can be checked on every release for regressions and newly introduced vulnerabilities, with analysis suited to CI-driven workflows. Supported architectures listed in the FAQ are ARM Cortex-M and Infineon AURIX TriCore. Fuzzware also describes compliance guidance, expert vulnerability verification, and solution recommendations for medical, automotive, critical-infrastructure, and smart-system or IoT teams. Pricing is available on request.
Good
- Tests closed-source binaries without source access
- Analyzes complete firmware systems and interfaces
- Automates peripherals and execution contexts
- Reports reproducible inputs and severity classifications
- Supports ARM Cortex-M and AURIX TriCore
Watch out
- Linux platform only
- Pricing requires a request
- Architecture support is currently limited
- Pre-validation is required before testing
Who it suits
Fuzzware suits teams testing embedded firmware in medical devices, automotive systems, critical infrastructure, or smart systems and IoT. It is intended for organizations needing binary-only analysis and repeatable CI/CD testing.
Verdict
Fuzzware combines binary-focused firmware fuzzing with full-system rehosting and repeatable release testing. Its reporting and compliance guidance may fit regulated embedded-software teams, while platform and architecture limits should be checked first.
The facts
Each one read from Fuzzware's own pages, with the date it was checked.
What it does
- Automated setup
- Its virtual execution environment handles peripherals, memory mappings, and execution contexts automatically for firmware analysis.checked 9 Oct 2026
- Automation
- The site says firmware binaries can be tested on every release to detect regressions and newly introduced vulnerabilities.checked 8 Oct 2026
- Binary analysis
- It tests compiled firmware binaries, including closed-source and third-party firmware, without requiring source code access.checked 8 Oct 2026
- Binary-only testing
- It analyzes compiled firmware binaries, including closed-source and third-party firmware, without requiring source code access.checked 9 Oct 2026
- Compliance
- Fuzzware says its reporting can support standards such as ISO 21434 and UN R155, and offers compliance guidance.checked 8 Oct 2026
- Compliance support
- Fuzzware says its reports can support standards such as ISO 21434 and UN R155, and offers compliance guidance.checked 9 Oct 2026
- Continuous testing
- Firmware binaries can be tested on every release to detect regressions and newly introduced vulnerabilities.checked 9 Oct 2026
- Expert services
- Fuzzware says its experts verify and classify vulnerabilities and provide solution recommendations.checked 9 Oct 2026
- Founders
- Fuzzware says it was founded by Simon Wörner and Tobias Scharnowski, PhD researchers from CISPA Helmholtz Center.checked 9 Oct 2026
- Full-system fuzzing
- It fuzzes complete firmware systems, including interacting components, interfaces, and execution paths.checked 9 Oct 2026
- Full-system testing
- Its fuzzing campaigns analyze complete firmware systems, including interacting components, interfaces, and execution paths.checked 8 Oct 2026
- Industries
- The site presents Fuzzware for medical devices, automotive systems, critical infrastructure, and smart systems and IoT.checked 8 Oct 2026
- Integration workflow
- Fuzzware says its repeatable firmware analysis fits CI-driven development workflows.checked 8 Oct 2026
- Intended users
- The site presents Fuzzware for teams working on medical devices, automotive systems, critical infrastructure, and smart systems or IoT.checked 9 Oct 2026
- Privacy
- Fuzzware's privacy policy identifies the company as the website data controller and cites the GDPR as a legal basis for processing personal data.checked 9 Oct 2026
- Product
- Fuzzware provides rehosting-based security testing for embedded software using automated fuzz testing without hardware.checked 9 Oct 2026
- Reports
- Security reports include vulnerability findings, coverage metrics, severity classifications, contextual execution data, and reproducible inputs.checked 9 Oct 2026
- Services
- The company describes expert firmware audits, vulnerability verification, and solution recommendations as part of its services.checked 8 Oct 2026
- Support
- Customers can contact the team for a technical response or book a meeting with a founder to discuss their firmware and setup.checked 8 Oct 2026
- Supported architectures
- The site says Fuzzware supports ARM Cortex-M architectures and Infineon AURIX TriCore.checked 9 Oct 2026
- Technical limits
- The site says the team pre-validates firmware architecture, execution behavior, and rehosting feasibility before testing.checked 8 Oct 2026
The company
- Company
- The imprint identifies the maker as Fuzzware GmbH, located in Bochum, Germany.checked 8 Oct 2026
- Company location
- The legal imprint lists Fuzzware GmbH at Rechener Str. 4a, 44787 Bochum, Germany.checked 9 Oct 2026
- Headquarters
- Bochum, Germanychecked 28 Sep 2026
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