Basement Floor Concrete Crack Filler - The cracks in the basement wall will not generally weaken the structure of your foundation, but they may cause other difficulties specifically, water problems.
If it rains out, particularly if you don't have functional and clean gutters, a lot of the water builds up against the exterior of your basement wall. If you don't get regular basement wall repair to keep these cracks closed, some of the water will enter your basement through these cracks. Even if your basement has a waterproofing membrane on all of the exterior walls, a significant enough crack can tear or perhaps shred the membrane and then you are in trouble all over again.
Most such cracks can be fixed from the inside in a timely and cost-effective manner that doesn't disturb the soil or that which remains of the watertight membrane on the exterior. Especially handy homeowners can even attempt it themselves, but it is not recommended unless you already know exactly what you're doing.
The best way to perform the basement wall repair is by injecting an expanding liquid urethane foam into the crack. When the liquid experiences water, then it expands dramatically, forcing the foam down and up, inward and outward along the whole length and thickness of the crack. It dries and becomes more watertight in moments, sealing the crack perfectly. Since it begins as a liquid of about precisely the same viscosity as water, then it is going to go anywhere that the water moves. Since it ends up a foam, it is relatively easy to cut off and, if necessary, sand down some of those foam which expands inward however usually, that is not a large issue.