“The MacOS High Sierra vulnerability is alarming because it makes it seamless for someone to log into a system as root. While there are other methods that can provide bad actors with access and password reset capabilities via physical access, these require some technical knowledge and time,” said JASK Director of Cybersecurity Rod Soto, who has tested and verified the flaw. “The severity of this is how simple and quick anyone can execute the method and log in to reset and access user information even if their passwords are complicated.”

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