The short answer is — at least, not for the purpose of cheating in online matches. But the long answer is far more interesting. It involves kernel-level drivers, virtualized execution environments, hardware memory isolation, and a multi-billion dollar arms race between game developers and cheat creators.
While some injectors claim to work by staying in "usermode" or using specific driver-level bypasses, using any DLL injector for Valorant is highly discouraged dll injector for valorant work