Bro,
CM-401 is a maneuverable ballistic missile (similar to Russian Iskander-M but relatively smaller in size and resultant range). Do not get me wrong - it is an impressive piece of hardware and Pakistan should consider inducting it. No harm in expanding our set of options.
However, do not be fooled; every solid-fueled ballistic missile is a hypersonic projectile in reality (speeds in excess of MACH 5). Hypersonic label is a captivating sales pitch though.
And the assumption that projectiles moving at hypersonic speeds are impossible counter, is absolutely false. State-of-the-art BMDS are being optimized to defeat these hypersonic projectiles in terminal phase such as PAC-3 MSE, SM-2 Block IV, SM-6, Arrow 3 and THAAD, and response time of each is amazing to say the least. SM-3 Block IB, SM-3 Block IIA and GMD are midcourse solutions (exo- atmospheric) on the other hand. We are lucky in the sense that India does not have this kind of stuff in its inventory. However, growing Indo-US ties is a problem.
Indian relations with Russia and Israel are already paying dividends. Besides induction of S-400 (Russian contribution), we need to keep an eye on the evolution of Barak-8 interceptors for use in Indian Kolkata Class destroyers and Indian AAD program (Israeli contributions).
FYI:
https://thediplomat.com/2018/08/ind...shoots-down-ballistic-missile-target-in-test/
My concern is that these advancements will eventually undermine the element of deterrence in the subcontinent, and at some point, somebody will be tempted to press the trigger (I do not trust Indians - advanced weapons in wrong hands is a problem). This would be the day when millions will loose their lives in short order, and a tragedy of even bigger scale will ensue afterwards.
In regards to defeating hypersonic cruise missiles, Glide Breaker prototypes are under development.
Things are heading in the wrong direction now. Pakistan needs to think beyond the lines of hard responses to emerging threats in the region; we should be in the position to pull strings in Washington DC, Moscow, Tel Aviv and Beijing, to our benefit - when necessary. This is possible with economic sustainability in the picture (beggars have no respect), and having a vibrant foreign policy (broader connections). Unfortunately, scores of Pakistani think on the lines of weapons and righteousness only - no sense of strategic depth (psychological inhibitions).