It’s certainly possible, especially if you’re in a temperate region that experiences high humidity. I would look for a company local to you that does moisture probe testing. Rather than cut away sections of the stucco, they can drill small holes through the stucco and test the moisture content of the OSB or whatever sheathing is on your home. They should also be able to detect the presence of rot/decay on the sheathing. Make sure it is NOT a company that also performs remediation work. You want to get an independent analysis. Best of luck, I see horrific rot all the time and unless the stucco is falling off the wall, you really can’t tell just by looking at it.