The assault happened on Walnut Avenue near Giddings Street just before 1 a.m.
Visalia police said a male suspect broke into the man's home and started stabbing him.
The victim was treated at a local hospital.
Detectives have not released any details about a possible motive, and they are still searching for the suspect.
Anyone with information about this case is asked to contact Visalia police at (559) 734-8116.
