When I strum the E and the A strings of my guitar (Squire Strat (unplugged) it makes a weird rambling/buzzing sound. Does anybody knows whats wrong?

Are the pickups needed to be replaced?
Are the strings needed to be replaced? -> (like 3 months old)

I'm really carefull with my guitar, it always stands on its place and there's no cold or something in the room.
If it's unplugged, that means no sound is coming out other than the strings, so it's not the pickups. It could be your action. Squier's a bit ****ty anyway, so it could just be the guitar. And yes, replace your three-month old strings before they turn black and break and stab you in the eye >.>