Yes, you will always need a valid e-vignette when you enter a tolled road in Hungary, also for just transiting through Hungary.
You can order your Hungarian e-vignette now comfortably here.
Related articles:
What happens if I drive without a Hungarian vignette?
Can I drive until the first exit on the highway in Hungary without a vignette?
What different types of the Hungarian motorway e-vignette are available?