Catholic Catechism:
405. . . original sin does not have the character of a
personal fault in any of Adam's descendants. It is a
deprivation
of original holiness and justice, but human nature has not been
totally corrupted: it is wounded in the natural powers
proper to it,
subject to ignorance, suffering and the dominion of
death, and
inclined to sin - an inclination to evil that is called
“concupiscence”.
Council of Trent’s teaching:
Canon
V If any one says, that, since Adam's sin, the free will of
man is lost and extinguished; or, that it is a thing with only a name,
yea a name without a reality, a figment, in fine, introduced into
the Church by Satan; let him be anathema.