CVE-2025-11500

Plain English Summary

AI-powered analysis for quick understanding

An attacker on the same local network can easily steal usernames and encoded passwords for the management interface of Tinycontrol devices by simply checking the server's response when accessing the login page, especially if the default security setting is not changed. This vulnerability affects both regular and admin user accounts, making it critical to update to the latest firmware to secure the devices.

Technical Description

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).

CVSS Vector Analysis

Attack VectorAdjacent Network
Attack ComplexityLow
Privileges RequiredNone
User InteractionNone
Confidentiality ImpactHigh
Integrity ImpactHigh
Availability ImpactHigh
ScopeChanged

Vector String

CVSS:4.0/AV:A/AC:L/AT:N/PR:N/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X

Exploit Resources

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Official References

Est. Bounty
$4,579($1K-$5K)
Vendor Response
Grade APatched in 0 days

Quick Information

Published

Mar 16, 2026

22 days ago

Last Modified

Mar 16, 2026

22 days ago