Collins Russian Dictionary 2nd Edition © HarperCollins Publishers 2000, 1997:
vulnerable [ˈvʌlnərəbl] adj (position) уязви́мый#; (person) рани́мый#
he is vulnerable to (illness) он подве́ржен +dat
* is used to mark translations which have irregular inflections. The Russian-English side of the dictionary gives inflectional information.
Русский: