2026-07-072026-07-07http://salesiana.dossiersoluciones.com/handle/123456789/123980Our main result states that a finite semiring of order >2 with zero which is not a ring is congruence-simple if and only if it is isomorphic to a `dense' subsemiring of the endomorphism semiring of a finite idempotent commutative monoid. We also investigate those subsemirings further, addressing e.g. the question of isomorphy.16 pagesRings and Algebras16Y60text