Root a phone using Quadrooter
Quadrooter refers to a set of vulnerabilities , which are explained in the question here What is QuadRooter? Are 900 million Android devices vulnerable?

These vulnerabilities may be translated into rooting techniques in due course, if security upgrades don't fix them (even if upgraded, it may not reach all devices for various reasons)

To answer your question, it may be possible, but at this point of time, nothing can be said with certainty.