Here is a long thread on this topic.
forums.catholic-questions.org/showthread.php?t=80349
Here is a snippet from Lumen Gentium (similar to passage in catechism)…
- Finally, those who have not yet received the Gospel are related to the People of God in various ways. There is, first, that people to which the covenants and promises were made, and from which Christ was born according to the flesh (cf. Rom. 9:4-5): in view of the divine choice, they are a people most dear for the sake of the fathers, for the gifts of God are without repentance (cf. Rom. 11:29). But the plan of salvation also includes those who acknowledge the Creator, in the first place amongst whom are the Moslems: these profess to hold the faith of Abraham, and together with us they adore the one, merciful God, mankind’s judge on the last day.
And Paul stated in Acts 17:23 For passing by, and seeing your idols, I found an altar also, on which was written: To the unknown God. What therefore you worship, without knowing it, that I preach to you
There seem to be two camps on this.
- The first follows St. Paul’s lead and says if someone worships one god who they acknowledge to be the All-powerful Creator and since we believe there is indeed only One God, they must also be worshipping The One God (by default). This same camp would say that Muslims are ignorant of the fullness of truth and their image of God is very skewed, but still the One Creator of all.
- The second camp looks at the attributes of the professed deity and compares them with the attributes of our God and concludes that they must not be the same.
Who is correct? Only God knows. Do the current Muslims believe they are worshipping the One God Creator of all, the God of Abraham? They do believe so. That is what they profess. From God’s perspective (dare I presume) that may be God’s way of drawing good (muslims worshipping Him) out of evil (Mohammed inventing the Quran after being visited by, perhaps, a demon calling himself Gabriel). This is an oversimplification, but we do not know the mind of God. We simply don’t know the extent of God’s mercy.
The following was cut and paste from someone else, but I think it sums up nicely.
Again, for clarification. Muslims believe in the creator of this world, which happens to be One. So whoever believes that one creator created this world, is
worshipping the only God THEORETICALLY (not theologically). The Church says we worship the same God because Islam is monotheistic, but the
Church never says we worship the same God theologically, and the Church never said Muhammad is a prophet from God. Remember, EVEN SATAN believes in the God of Abraham. So if the Church says Muslims worship the God of Abraham, I don’t take it as an agreement on Muhammad being a prophet of God or Islam being truthful, because the Church admits as well that even Satan knows the Only God, the God of Abraham. Muhammed, inspired (perhaps) by satan, hijacked God and invented Islam. This is between God and Muhammed. Current devout Muslims are, in good faith, worshipping a misguided view of the One God.