TP-Link SG105PE firmware prior to 'TL-SG105PE(UN) 1.0_1.0.0 Build 20221208' contains an authentication bypass vulnerability. Under the certain conditions, an attacker may impersonate an administrator of the product. As a result, information may be obtained and/or the product's settings may be altered with the privilege of the administrator.
https://www.tp-link.com/jp/support/download/tl-sg105pe/v1/#Firmware
https://www.tp-link.com/en/business-networking/easy-smart-switch/tl-sg105pe/