Well it's not like any EM wave would affect any memory IC, but yes there does exist some effect.
The nature of EM waves is known to originate from current and voltage signals passing through any wires. Plus we know that any EM wave could induce currents and voltages in conducting materials based on their frequency, strength of wave, polarity of signal.
So, YES EM waves can affect any IC but mainly depending on it's frequency, materials IC is made of, track dimensions, etc.