C. S. Lewis wrote that there are only four possibilities if extra terrestrial life exist.
1. They are unfallen and more advanced than us. We have theology that explains this, we call these beings angels.
2 They are fallen and more advanced than us. We have theology that explains this. We call these beings demons.
3. They are fallen and about our level of advancement. In such a case we need to see how has God for their salvation, and how can we evangelize them?
4. They are unfallen and less advanced than us. In which case, they would probably perceive us as demons.
Setting aside the question of supernatural beings, which are not covered by SETI. We do not have any information pro or con on the existence of life off of Earth either within our outside our solar system.
However, if we do encounter a extraterrestrial intelligent life, some variation of number 3 will apply. Even if more technologically advanced, the odds are they will not be morally more advanced than us.
Humans remain as fallen as we were at the dawn of humanity despite our own technological advancement. No reason to think that any other intelligent species would be different.