Mustafa, Yusuf, Mustakeem and Alimustafa allegedly entered the victim's house yesterday and attacked her, they said.
The woman was rushed to hospital in serious condition, police said.
A case has been registered against the four persons, aged between 20-25, for attempt to murder in this connection, they said.
The accused are absconding, police said, adding that the motive behind the attack has not been ascertained yet.