FDA 524B Cybersecurity Requirements: A Compliance Guide

Master FDA 524B cybersecurity requirements. Learn how to meet SBOM, vulnerability monitoring, and patch management standards for medical device submissions.

This guide is written for medical device manufacturers navigating FDA 524B cybersecurity requirements. It is built from real submissions, FDA correspondence, and the standards reviewers actually cite. Use it as a working reference: read straight through, jump to the section that matches your current gap, or hand it to your engineering and regulatory leads as a checklist.

Understanding Section 524B of the FD&C Act

Understanding Section 524B of the FD&C Act is one of the areas FDA reviewers probe hardest in modern submissions. The points below summarize what we ship in client packages and what we have seen FDA accept and reject across 250+ device submissions.

The Legislative Origin: Consolidated Appropriations Act of 2023

The Legislative Origin: Consolidated Appropriations Act of 2023 — make sure your design history file documents the rationale, the standard you mapped to, and the objective evidence that closes the loop. Reviewers expect to trace the requirement, the test, and the residual risk in a single thread.

Who is a 'Cyber Device'? Defining the Scope

Who is a 'Cyber Device'? Defining the Scope — make sure your design history file documents the rationale, the standard you mapped to, and the objective evidence that closes the loop. Reviewers expect to trace the requirement, the test, and the residual risk in a single thread.

The Three Pillars of 524B Cybersecurity Compliance

The Three Pillars of 524B Cybersecurity Compliance is one of the areas FDA reviewers probe hardest in modern submissions. The points below summarize what we ship in client packages and what we have seen FDA accept and reject across 250+ device submissions.

Pillar 1: Plan to Monitor, Identify, and Address Vulnerabilities

Pillar 1: Plan to Monitor, Identify, and Address Vulnerabilities — make sure your design history file documents the rationale, the standard you mapped to, and the objective evidence that closes the loop. Reviewers expect to trace the requirement, the test, and the residual risk in a single thread.

Pillar 2: Design, Develop, and Maintain Processes for Security Updates

Pillar 2: Design, Develop, and Maintain Processes for Security Updates — make sure your design history file documents the rationale, the standard you mapped to, and the objective evidence that closes the loop. Reviewers expect to trace the requirement, the test, and the residual risk in a single thread.

Pillar 3: The Software Bill of Materials (SBOM) Requirement

Pillar 3: The Software Bill of Materials (SBOM) Requirement — make sure your design history file documents the rationale, the standard you mapped to, and the objective evidence that closes the loop. Reviewers expect to trace the requirement, the test, and the residual risk in a single thread.

Premarket Submission Requirements Under 524B

Premarket Submission Requirements Under 524B is one of the areas FDA reviewers probe hardest in modern submissions. The points below summarize what we ship in client packages and what we have seen FDA accept and reject across 250+ device submissions.

Integration with the Secure Product Development Framework (SPDF)

Integration with the Secure Product Development Framework (SPDF) — make sure your design history file documents the rationale, the standard you mapped to, and the objective evidence that closes the loop. Reviewers expect to trace the requirement, the test, and the residual risk in a single thread.

Required Documentation for eSTAR and Traditional Submissions

Required Documentation for eSTAR and Traditional Submissions — make sure your design history file documents the rationale, the standard you mapped to, and the objective evidence that closes the loop. Reviewers expect to trace the requirement, the test, and the residual risk in a single thread.

Postmarket Obligations: Beyond the Initial Submission

Postmarket Obligations: Beyond the Initial Submission is one of the areas FDA reviewers probe hardest in modern submissions. The points below summarize what we ship in client packages and what we have seen FDA accept and reject across 250+ device submissions.

Coordinated Vulnerability Disclosure (CVD) Programs

Coordinated Vulnerability Disclosure (CVD) Programs — make sure your design history file documents the rationale, the standard you mapped to, and the objective evidence that closes the loop. Reviewers expect to trace the requirement, the test, and the residual risk in a single thread.

Timeline for Security Patches and Regular Updates

Timeline for Security Patches and Regular Updates — make sure your design history file documents the rationale, the standard you mapped to, and the objective evidence that closes the loop. Reviewers expect to trace the requirement, the test, and the residual risk in a single thread.

FDA’s 'Refuse to Accept' (RTA) Authority under 524B

FDA’s 'Refuse to Accept' (RTA) Authority under 524B is one of the areas FDA reviewers probe hardest in modern submissions. The points below summarize what we ship in client packages and what we have seen FDA accept and reject across 250+ device submissions.

How to Avoid Deficiency Leads and Submission Delays

How to Avoid Deficiency Leads and Submission Delays — make sure your design history file documents the rationale, the standard you mapped to, and the objective evidence that closes the loop. Reviewers expect to trace the requirement, the test, and the residual risk in a single thread.

Practical Steps for Achieving 524B Compliance

Practical Steps for Achieving 524B Compliance is one of the areas FDA reviewers probe hardest in modern submissions. The points below summarize what we ship in client packages and what we have seen FDA accept and reject across 250+ device submissions.

Frequently asked questions

What devices are considered 'cyber devices' under Section 524B?

Short answer: It depends on the device classification, intended use, and connectivity profile — but the controlling references are FDA's February 2026 premarket guidance, AAMI SW96, and IEC 81001-5-1. The sections above walk through how each applies. For the full context, work through the relevant section above and the linked services below — every answer here is grounded in current FDA guidance and the standards your reviewer is using.

What are the SBOM requirements for FDA 524B compliance?

Short answer: FDA 524B cybersecurity requirements is a discrete deliverable inside the Secure Product Development Framework (SPDF). FDA expects it documented, traceable, and version-controlled inside your QMS. For the full context, work through the relevant section above and the linked services below — every answer here is grounded in current FDA guidance and the standards your reviewer is using.

How does Section 524B change the FDA's authority to reject submissions?

Short answer: Treat it as a process, not a one-off document: own the requirement in design controls, map it to a current standard, generate evidence during V&V, and surface the residual risk in your postmarket plan. For the full context, work through the relevant section above and the linked services below — every answer here is grounded in current FDA guidance and the standards your reviewer is using.

Does 524B apply to legacy medical devices or only new submissions?

Short answer: Yes — under Section 524B and the February 2026 final guidance, every cyber device requires the artifact in question. Skipping it is the fastest way to an RTA hold. For the full context, work through the relevant section above and the linked services below — every answer here is grounded in current FDA guidance and the standards your reviewer is using.

What postmarket cybersecurity activities are mandated by Section 524B?

Short answer: It depends on the device classification, intended use, and connectivity profile — but the controlling references are FDA's February 2026 premarket guidance, AAMI SW96, and IEC 81001-5-1. The sections above walk through how each applies. For the full context, work through the relevant section above and the linked services below — every answer here is grounded in current FDA guidance and the standards your reviewer is using.

Where this fits in the cluster

This page sits downstream of our pillar resources on FDA 524B cybersecurity requirements. If you arrived here from a different starting point, these are the most useful adjacent pages:

• FDA Premarket Cybersecurity Services
• FDA Cybersecurity Deficiency Response
• 12 Reasons the FDA Rejects Medical Device Cybersecurity Submissions
• The MedTech Cybersecurity Standards Decoder

Related from Blue Goat Cyber

• FDA-Compliant SBOM Services
• Medical Device Threat Modeling
• Medical Device Penetration Testing
• FDA Postmarket Cybersecurity Services
• The SPDF Playbook for FDA-Ready Medical Devices
• The Postmarket Cybersecurity Readiness Plan

Sources & primary references

• Cybersecurity in Medical Devices: Quality System Considerations and Content of Premarket Submissions — U.S. Food and Drug Administration (FDA)
• Consolidated Appropriations Act, 2023 - Section 524B Ensuring Cybersecurity of Medical Devices — U.S. Congress (GovInfo)
• Secure Software Development Framework (SSDF) Version 1.1 — NIST
• Draft Guidance: Select Updates for Cybersecurity in Medical Devices: Data Types and Formats for SBOMs — U.S. Food and Drug Administration (FDA)

Talk to a regulatory cybersecurity team

If you are working through FDA 524B cybersecurity requirements and want a second pair of eyes on your submission package, we ship cybersecurity deliverables for medical device manufacturers across 510(k), De Novo, PMA, and EU MDR pathways. Book a discovery session and we will walk your evidence with you.