Theoretically, yes.
One of the major American concerns in the early 1960s after the launch of Sputnik was that the Soviet Union would deploy nuclear weapons on orbit and the United States would not know, and they would be able to strike at American targets in less than a minute with no advance warning whatsoever. There was a reason why the Americans and the Soviet Union didn't go down that path, for strategic stability purposes.
Today, that can happen. Theoretically, that can happen. Its probability is low right now, but we have to look down the road to see, potentially, how they will think. We never thought anyone would fly an airplane into the World Trade Center. No one thinks someone might drop a satellite onto a city.