Modern computers that come with a Thunderbolt interface and run Windows, macOS, Linux, or FreeBSD are vulnerable to a range of Direct Memory Access (DMA) attacks performed by potential attackers with physical access to the device using malicious peripherals. The attacks can compromise a vulnerable computer in just a few seconds. The combination of power, video, and peripheral-device DMA over Thunderbolt 3 ports facilitates the creation of malicious charging stations or displays that function correctly but simultaneously take control of connected machines. Users need to completely disable the Thunderbolt interface on their computers if they want to be fully protected.
Source: https://www.bleepingcomputer.com/news/security/thunderclap-vulnerabilities-allow-attacks-using-thunderbolt-peripherals/