Tinycontrol LAN Controller v3 LK3 1.58a Unauthenticated Configuration Backup Disclosure

Advisories

severity: high
date: December 9, 2025
Affecting: <=1.58a, HW 3.8
CVE: CVE-2023-53739
CWE: CWE-260 Password in Configuration File
CVSS: 8.2
CVSS V4 Vector: CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:H/VI:H/VA:N/SC:H/SI:H/SA:N
References: ExploitDB-51731
Tinycontrol Product Homepage
Zero Science Lab Advisory ID
Credit: LiquidWorm as Gjoko Krstic of Zero Science Lab
Description: Tinycontrol LAN Controller v3 LK3 version 1.58a contains an unauthenticated vulnerability that allows remote attackers to download configuration backup files containing sensitive credentials. Attackers can retrieve the lk3_settings.bin file and extract base64-encoded user and admin passwords without authentication.