Temp of 72C is dangerous for that processor. Do you mean stock as in stock speeds, or that you are using the stock cooler? If you are using the stock cooler, it is very likely that is why your CPU is reaching that temperature.
Different games have different results too. I don't think it is a hardware problem, but is likely just that CS:GO is taking a lot of resources to run. But before you check around on that, make sure you aren't overclocked and also make sure you use a aftermarket CPU cooler. They work so much better, and they are fairly cheap.