It is actually explicitly wrong view, stated as such and explained as wrong view by the Tathagata;
5. Doctrines of Nibbāna Here and Now (Diṭṭhadhammanibbānavāda): Views 58–62
93. "There are, bhikkhus, some recluses and brahmins who maintain a doctrine of Nibbāna here and now and who, on five grounds, proclaim Nibbāna here and now for an existent being. And owing to what, with reference to what, do these honorable recluses and brahmins proclaim their views?
94. "Herein, bhikkhus, a certain recluse or a brahmin asserts the following doctrine or view: 'When this self, good sir, furnished and supplied with the five strands of sense pleasures, revels in them — at this point the self attains supreme Nibbāna here and now.' In this way some proclaim supreme Nibbāna here and now for an existent being.
95. "To him another says: 'There is, good sir, such a self as you assert. That I do not deny. But it is not at that point that the self attains supreme Nibbāna here and now. What is the reason? Because, good sir, sense pleasures are impermanent, suffering, subject to change, and through their change and transformation there arise sorrow, lamentation, pain, grief, and despair. But when the self, quite secluded from sense pleasures, secluded from unwholesome states, enters and abides in the first jhāna, which is accompanied by initial and sustained thought and contains the rapture and happiness born of seclusion — at this point, good sir, the self attains supreme Nibbāna here and now.' In this way others proclaim supreme Nibbāna here and now for an existent being.
96. "To him another says: 'There is, good sir, such a self as you assert. That I do not deny. But it is not at that point that the self attains supreme Nibbāna here and now. What is the reason? Because that jhāna contains initial and sustained thought; therefore it is declared to be gross. But when, with the subsiding of initial and sustained thought, the self enters and abides in the second jhāna, which is accompanied by internal confidence and unification of mind, is free from initial and sustained thought, and contains the rapture and happiness born of concentration — at this point, good sir, the self attains supreme Nibbāna here and now.' In this way others proclaim supreme Nibbāna here and now for an existent being.
97. "To him another says: 'There is, good sir, such a self as you assert. That I do not deny. But it is not at that point that the self attains supreme Nibbāna here and now. What is the reason? It is declared to be gross because of the mental exhilaration connected with rapture that exists there. But when, with the fading away of rapture, one abides in equanimity, mindful and clearly comprehending, and still experiencing happiness with the body, enters and abides in the third jhāna, so that the ariyans announce: "He abides happily, in equanimity and mindfulness" — at this point, good sir, the self attains supreme Nibbāna here and now.' In this way some proclaim supreme Nibbāna here and now for an existent being.
98. "To him another says: 'There is, good sir, such a self as you assert. That I do not deny. But it is not at that point that the self attains supreme Nibbāna here and now. What is the reason? It is declared to be gross because a mental concern, 'Happiness,' exists there. But when, with the abandoning of pleasure and pain, and with the disappearance of previous joy and grief, one enters and abides in the fourth jhāna, which is without pleasure and pain and contains purification of mindfulness through equanimity — at this point, good sir, the self attains supreme Nibbāna here and now.' In this way some proclaim supreme Nibbāna here and now for an existent being.
"This, bhikkhus, the Tathāgata understands... and it is concerning these that those who would rightly praise the Tathāgata in accordance with reality would speak.
99. "It is on these five grounds, bhikkhus, that these recluses and brahmins who maintain a doctrine of Nibbāna here and now proclaim supreme Nibbāna here and now for an existent being. Whatever recluses or brahmins proclaim supreme Nibbāna here and now for an existent being, all of them do so on these five grounds or on a certain one of them. Outside of these there is none.
...
103. "This, bhikkhus, the Tathāgata understands. And he understands: 'These standpoints, thus assumed and thus misapprehended, lead to such a future destination, to such a state in the world beyond.' ...
Ye people should place the heretic on the ignore list.