Exactly. That is exactly what the Catholic Church (and our LordJesus Christ) teach: absolutely no one AT ALL can be saved outside the Roman Catholic Church: not protestant, nor jew, nor mohammadean, nor schismatic, and certainly not infidels and pagans can be saved outside of Her. The Church has infallibly defined this three times. Nothing any Pope from henceforth says can change what has been infallibly defined. We, as Catholics, know that there is absolutely no such thing as changing doctrine, as this would conradict the very Nature of God: unchanging, and such a belief would contradict the words of Holy Writ: “For I am the Lord, and I change not,” (Malachias iii. 6) and “Jesus Christ, yesterday, and today; and the same for ever” (Hebrews xiii. 8). We know that there is neither any such thing as “evolution of doctrine” that is: a doctrine meaning one thing at one point and then changing later. We confess that additions to a defined doctrine can be made, but absolutely nothing can be CHANGED in anyway whatsoever.
To say, as the Church has infallibly in the Council of Lateran IV: “One indeed is the universal Church of the fauthful outside of which NO ONE AT ALL IS SAVED”, and again at Florence: “It [The Roman Catholic Church] firmly believes, professes, and preaches, that NONE of those outside the Church, neither pagan nor Jew, nor heretic or schismatic, can have a share in life eternal, but that they will go into the everlasting fire prepared for the devil and his angels, unless BEFORE DEATH the same ae joined to Her.”
Now, to say: yes, some heretics can be saved, some infidels, some pagans, even, can be saved, is an absolute and clear CHANGE in this doctrine. “ABSOLUTELY NO ONE” outsise the Church can be saved CANNOT become: “Almost no one” or even yet “a few people” outside the Church being saved. It says ABSOLUTELY NO ONE. We know what ABSOLUTELY means: that means positively, not one single instance at all.
Today some propose a pernicious error so readily condemned by Blessed Pius IX. They propose that those who want to be baptized are still a part of the Church, even though they have not partaken in the Sacrament of regeneration, the only way to forgive Original Sin! This is a pernicious and damnable heresy. Moreover, even worse, some say that not only can you be saved by a baptism of desire but even if you don’t know what baptism is, you can mysteriously have a desire for what you do not know exists! How contrary to reason this is! How can we know, how can we love, how can we at all desire, something that we do not know exists?! How could a person desire to read a book if he not only did not have a book but also could not even read in the first place?! He could never have such a desire. Only such things that are natural in men are desired by nature alone. Baptism is not natural to men; it is not a part of the natural law. On the contrary, Christ instituted it in a supernatural way, to give supernatural grace, without which we have no hope for salvation.
We must listen most readily to the word of Christ Himself in Holy Scripture, speaking to the Apostles: “He that heareth you, heareth me; and he that despiseth you, despiseth me; and he that despiseth me, despiseth him that sent me” (Lk. 10.16)
If any man will not hear the Apostles appointed by Christ (the Bishops of our holy religion), he is a stranger to salvation. He is without hope.