https://www.bleepingcomputer.com/news/security/qnap-warns-users-to-disable-afp-until-it-fixes-critical-bugs/

Taiwanese corporation QNAP has asked customers this week to disable the AFP file service protocol on their network-attached storage (NAS) appliances until it fixes multiple critical Netatalk vulnerabilities.

Netatalk is an open-source implementation of AFP (short for Apple Filing Protocol) that enables NIX/BSD systems to act as an AppleShare file server (AFP) for macOS clients.