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    Two years of Section 524B: what FDA reviewers are pushing back on

    Patterns from recent deficiency letters: weak SBOM hygiene, missing VEX statements, and CVD policies that exist on paper but have no real intake.

    Two years into Section 524B enforcement, the most common FDA cybersecurity deficiencies cluster around three themes:

    1. SBOMs that list components but lack version pinning, hash, or supplier — making vulnerability monitoring impossible to verify.

    2. No VEX (Vulnerability Exploitability eXchange) statements paired with the SBOM, leaving reviewers to assume every CVE is exploitable.

    3. Coordinated Vulnerability Disclosure policies with no working intake address, no triage SLA, and no evidence of past coordination.

    Fix these three before submission and you'll preempt the majority of cyber RTAs.