Someone who is vulnerable is weak and without protection,
with the result that they are easily hurt physically or emotionally.
Old people are particularly vulnerable members of our society.
If a person, animal, or plant is vulnerable to a disease, they are
more likely to get it than other people, animals, or plants. = prone, susceptible
People with high blood pressure are especially vulnerable to diabetes...
Something that is vulnerable can be easily harmed or affected by something bad.
Their tanks would be vulnerable to attack from the air...
Goodyear could be vulnerable in a prolonged economic slump.