I've got a fairly common below-grade basement door setup; a doorway thru the poured basement wall into a space enclosed with cemented cinder blocks and a roughly poured floor, containing wooden stairs and covered by overlapping metal doors.
The obvious problem with this setup is that water can find its way through the loose (uncemented) joint between stair enclosure and foundation wall. Especially after a few decades of subsidance have let things shift a bit.
As a stopgap (literally) I've injected urethane foam into the space between blocks and foundation on both sides ... but I'm still sometimes getting a seeping of water thru this space.
If I want to eliminate that, first step is probably to improve exterior grading so there's less water near the foundation. After that, choices seem to be either let it be leaky but put in a french drain, or to dig up and redo the enclosure with a better bond to the foundation, or to dig things out and try for a better injected gasket ...
Any advice for this kind of joint?