Tinycontrol LAN Controller 1.58a Authentication Bypass via Admin Password Change

Advisories

severity: critical
date: December 30, 2025
Affecting: LAN Controller HW 3.8, <= 1.58a
CVE: CVE-2023-54327
CWE: CWE-862 Missing Authorization
CVSS: 9.3
CVSS V4 Vector: CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N
References: ExploitDB-51732
Tinycontrol Official Product Homepage
Zero Science Lab Disclosure (ZSL-2023-5787)
Credit: LiquidWorm as Gjoko Krstic of Zero Science Lab
Description: Tinycontrol LAN Controller 1.58a contains an authentication bypass vulnerability that allows unauthenticated attackers to change admin passwords through a crafted API request. Attackers can exploit the /stm.cgi endpoint with a specially crafted authentication parameter to disable access controls and modify administrative credentials.