The Food and Drug Administration this week added a new vulnerability grading system designed specifically for medical devices to its list of medical device development tools (MDDTs) – essentially giving it a final vote of approval as a scientifically valid metric.
It’s a long-expected move. The new rubric, developed for the FDA by MITRE, was first released last year and emphasizes risk to patients rather than ease and scope of exploitation. The concept has been praised by vendors, regulators and researchers alike, as an approach that emphasizes the importance of a common language for risk in the disclosure process. And, they say, it is a model other sectors might want to invest in.
If you were to break it into a mathematic equation, risk is impact multiplied by probability. If something is extremely likely to happen, it’s probably a high risk. The traditional measure of the threat of a vulnerability, the Common Vulnerability Scoring System, is largely based on the probability someone might exploit something.
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