A serial interface can be accessed with physical access to the PCB of Wattsense Bridge devices. After connecting to the interface, access to the bootloader is possible, as well as a Linux login prompt. The bootloader access can be used to gain a root shell on the device. This issue is fixed in recent firmware versions BSP >= 6.4.1.

The ESP32 system on a chip (SoC) that powers the Meatmeet Pro was found to have JTAG enabled. By leaving JTAG enabled on an ESP32 in a commercial product an attacker with physical access to the device can connect over this port and reflash the device's firmware with malicious code which will be executed upon running. As a result, the victim will lose access to the functionality of their device and the attack may gain unauthorized access to the victim's Wi-Fi network by re-connecting to the SSID defined in the NVS partition of the device.

Flock Safety LPR (License Plate Reader) devices with firmware through 2.2 have an on-chip debug interface with improper access control.

Flock Safety Gunshot Detection devices before 1.3 have an on-chip debug interface with improper access control.

Mediatrix 4102 before v48.5.2718 allows local attackers to gain root access via the UART port.