Hackers could use a stolen fingerprint to break into a fairly rudimentary security system. A more advanced system might be possible, too, if they have lots of time and money at their disposal.
There are multiple ways to fool fingerprint readers. Stolen fingerprints are more helpful to hackers if they also have metadata – associated identities and login information, since two-factor security systems often require both conventional passwords and fingerprint scans.
Full article: How criminals might use stolen fingerprints.