CVE-2023-54327: Tinycontrol Lan Controller Firmware

Critical severity, CVSS 9.8. EPSS: 0.7% chance of exploitation in the next 30 days.

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.

Affected products

• Tinycontrol Lan Controller Firmware: up to and including 1.58a

Published 2025-12-30. Last modified 2026-09-24.