The 95 thesis were actually intended to correct the Roman church from abuses regarding indulgences, the doctrine of which was not all that official. But if not against "authentic teachings of the Catholic church," then it seems that pope was mistaken in warning Luther in his edict "Exsurge Domine" that he risked excommunication unless within 60 days he recanted 41 sentences drawn from his writings, including the Ninety-five Theses. But that is not all that Luther taught after being persecuted for these 95 appeals, arguments and exhortations, and certainly, among others, Luther's rejection of the novel and unScriptural premise of ensured perpetual magisterial infallibility, and of required submission of faith, or of mind and will based on it is contrary to Catholic teaching.
But the question must be asked, just what do you consider "authentic teachings of the Catholic Church?" Only infallible teachings, or also encyclicals, bulls, social teaching, whatever the V2 and or the CCC says?
For we have variant beliefs on this among RCs, even here.
Hardly. The 95 thesis was the culmination of Luther's work to design a pseudo-Christianity whereby he could keep his clerical vocation while simultaneously getting himself out from under the authority of the true Church.
He DESIGNED it to resist scrutiny by the real Church, just like every other cult.