CVE-2025-15587: Tinycontrol Lan Kontroler v3.5

High severity, CVSS 8.6. EPSS: 0.2% chance of exploitation in the next 30 days.

Tinycontrol devices such as tcPDU and LAN Controllers LK3.5, LK3.9 and LK4 allow a low privileged user to read an administrator's password by directly accessing a specific resource inaccessible via a graphical interface. This issue has been fixed in firmware versions: 1.36 (for tcPDU), 1.67 (for LK3.5 - hardware versions: 3.5, 3.6, 3.7 and 3.8), 1.75 (for LK3.9 - hardware version 3.9) and 1.38 (for LK4 - hardware version 4.0).

Affected products

• Tinycontrol Lan Kontroler v3.5: before 1.67 (fixed in 1.67)
• Tinycontrol LK3.9: before 1.75 (fixed in 1.75)
• Tinycontrol LK4: before 1.38 (fixed in 1.38)
• Tinycontrol Tcpdu: before 1.36 (fixed in 1.36)

Published 2026-03-16. Last modified 2026-06-17.