Reading God's judgement on Adam & Eve and Satan would allow us to see and understand that Satan had done something in excess that merited not just a punishment but a "curse".
We can see from the Book of Job, God sets the limits on what Satan was allowed to do.
Job 1:8-12 New International Version (NIV)
8 Then the Lord said to Satan, “Have you considered my servant Job? There is no one on earth like him; he is blameless and upright, a man who fears God and shuns evil.”
9 “Does Job fear God for nothing?” Satan replied. 10 “Have you not put a hedge around him and his household and everything he has? You have blessed the work of his hands, so that his flocks and herds are spread throughout the land. 11 But now stretch out your hand and strike everything he has, and he will surely curse you to your face.”
12 The Lord said to Satan, “Very well, then, everything he has is in your power, but on the man himself do not lay a finger.”
Then Satan went out from the presence of the Lord.
We can see from Book of Job, God sets limits to what Satan can do, otherwise as St.Augustine said if God had given Satan a freehand no man shall be alive.
So, back in the Garden of Eden, surely Satan under God's permissive Will had given access to tempt Adam & Eve but the judgment of God implied not just a punishment but a curse towward Satan action, which basing on the Book of Job should not be the case as Satan is clearly instructed on the limits.
God's judgment or the "cursed punishment" goes like this;
So the LORD God said to the serpent: “BECAUSE YOU HAVE DONE THIS, Cursed are you above all livestock, and every beast of the field! On your belly will you go, and dust you will eat, all the days of your life. (Genesis3:14)
My question is, what is the meaning or the so called overly done action does the serpent had committed for God to said the words "BECAUSE YOU HAVE DONE THIS"?
My impression is, if Satan just followed the limits of whatever God's instructions had given to him in tempting Adam & Eve, satan would have not merited a "curse".
I'm looking for a Catholic perspective although a biblical explanations from Christian faith would also be helpful.