Exploits: how great is the threat?

How serious, really, is the danger presented by exploits? The recent leak of an exploit toolset allegedly used by the infamous Equation Group suggests it’s time to revisit that question. Several zero-days, as well as a bunch of merely ‘severe’ exploits apparently used in-the-wild were disclosed, and it is not yet clear whether this represents the full toolset or whether there’s more to come, related to either Equation or another targeted threat actor.