The ventilator does not perform proper file integrity checks when adopting firmware updates. This makes it possible for an attacker to force unauthorized changes to the device's configuration settings and/or compromise device functionality by pushing a compromised/illegitimate firmware file. This could disrupt the function of the device and/or cause unauthorized information disclosure.
https://www.cisa.gov/news-events/ics-medical-advisories/icsma-24-319-01