PT-2026-25662 · Tinycontrol · Lk3.9+3

Published 2026-03-16 · Updated 2026-03-16 · CVE-2025-15587

Positive Technologies (AI Summary)

CVSS v4.0

8.6

High

Base vector

AV:A/AC:L/AT:N/PR:L/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N

Name of the Vulnerable Software and Affected Versions Tinycontrol tcPDU versions prior to 1.36 Tinycontrol LK3.5 versions prior to 1.67 Tinycontrol LK3.9 versions prior to 1.75 Tinycontrol LK4 versions prior to 1.38

Description Tinycontrol devices, including tcPDU and LAN Controllers LK3.5, LK3.9, and LK4, permit a user with limited privileges to obtain an administrator's password by directly accessing a resource that is not available through the standard graphical interface.

Recommendations Update tcPDU to firmware version 1.36 or later. Update LK3.5 to firmware version 1.67 or later. Update LK3.9 to firmware version 1.75 or later. Update LK4 to firmware version 1.38 or later.

Fix

Weakness Enumeration

CWE-425

Related Identifiers

CVE-2025-15587

Affected Products

Lk3.9

Lk4

Lan Kontroler V3.5

Tcpdu

References · 9

• https://nvd.nist.gov/vuln/detail/CVE-2025-15587 · Security Note
• https://t.me/CVEtracker/47528 · Telegram Post
• https://twitter.com/vuldb/status/2033520697948139696 · Twitter Post
• https://cert.pl/en/posts/2026/03/CVE-2025-11500 · Note
• https://tinycontrol.pl/en/tcpdu/downloads/#firmware · Note
• https://tinycontrol.pl/en/lk39/downloads/#firmware · Note
• https://tinycontrol.pl/en/archives/lan-controller-35/downloads/#firmware · Note
• https://tinycontrol.pl/en/lk4/downloads/#firmware · Note
• https://twitter.com/CVEnew/status/2033583683186397581 · Twitter Post