CAPEC vs FYEO Enterprise Threat Model: 2026 Comparison
CAPEC is a free threat modeling tool. FYEO Enterprise Threat Model is a commercial threat modeling tool by FYEO. Compare features, ratings, integrations, and community reviews side by side to find the best threat modeling fit for your security stack.
CST VerdictBased on our analysis of NIST CSF 2.0 coverage, core features, company size fit, deployment model, here is our conclusion:
Threat modeling teams building attack surface inventories should start with CAPEC because it's the only free, publicly maintained dictionary that maps adversary tactics to the specific weaknesses they exploit, not just the vulnerabilities themselves. NIST includes CAPEC as the authoritative source for attack pattern classification, and it's structured specifically for red teams and architects to enumerate realistic attack chains before code is written. Skip this if your team needs automated threat discovery or integration with your existing risk register; CAPEC is a reference library, not a scanning or correlation engine.
Mid-market and enterprise security teams with fragmented risk conversations across business units will see the most value in FYEO Enterprise Threat Model; it forces structured asset cataloging and threat scoping that actually sticks, rather than letting risk assessments languish in spreadsheets. The service covers all four NIST GV and ID risk management functions, meaning stakeholders get aligned on what matters before you're halfway through remediation. Skip this if your organization has already mapped critical assets and runs mature threat modeling in-house; FYEO is built for teams starting from scattered baselines, not optimizing established processes.
