🔐 CVE Alert

CVE-2025-11500

UNKNOWN 0.0

Credentials exposure in tinycontrol devices

CVSS Score
0.0
EPSS Score
0.0%
EPSS Percentile
0th

Tinycontrol devices such as tcPDU and LAN Controllers LK3.5, LK3.9 and LK4 have two separate authentication mechanisms - one solely for interface management and one for protecting all other server resources. When the latter is turned off (which is a default setting), an unauthenticated attacker on the local network can obtain usernames and encoded passwords for interface management portal by inspecting the HTTP response of the server when visiting the login page, which contains a JSON file with these details. Both normal and admin users credentials are exposed.  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).

CWE CWE-261 CWE-201
Vendor tinycontrol
Product lan kontroler v3.5
Published Mar 16, 2026
Last Updated Mar 16, 2026
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Affected Versions

tinycontrol / Lan Kontroler v3.5
0 < 1.67
tinycontrol / LK3.9
0 < 1.75
tinycontrol / LK4
0 < 1.38
tinycontrol / tcPDU
0 < 1.36

References

NVD ↗ CVE.org ↗ EPSS Data ↗
cert.pl: https://cert.pl/en/posts/2026/03/CVE-2025-11500/ securitum.com: https://securitum.com/CVE-2025-11500 tinycontrol.pl: https://tinycontrol.pl/en/archives/lan-controller-35/downloads/#firmware tinycontrol.pl: https://tinycontrol.pl/en/lk39/downloads/#firmware tinycontrol.pl: https://tinycontrol.pl/en/lk4/downloads/#firmware tinycontrol.pl: https://tinycontrol.pl/en/tcpdu/downloads/#firmware

Credits

Paweł Różański (Securitum.com)