Credentials exposure in tinycontrol devices

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Summary

CVECVE-2025-15587
StatePUBLISHED
AssignerCERT-PL
Source PriorityCVE Program / NVD first with legacy fallback
Published2026-03-16 14:17:56 UTC
Updated2026-05-19 15:17:37 UTC
DescriptionTinycontrol 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).

Risk And Classification

Primary CVSS: v4.0 8.6 HIGH from [email protected]

CVSS:4.0/AV:A/AC:L/AT:N/PR:L/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

EPSS: 0.000370000 probability, percentile 0.110390000 (date 2026-05-26)

Problem Types: CWE-425 | CWE-425 CWE-425 Direct Request ('Forced Browsing')

VersionSourceTypeScoreSeverityVector
4.0[email protected]Secondary8.6HIGHCVSS:4.0/AV:A/AC:L/AT:N/PR:L/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N/E:X/C...
4.0CNACVSS8.6HIGHCVSS:4.0/AV:A/AC:L/AT:N/PR:L/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N

CVSS v4.0 Breakdown

Attack Vector
Adjacent
Attack Complexity
Low
Attack Requirements
None
Privileges Required
Low
User Interaction
None
Confidentiality
High
Integrity
High
Availability
High
Sub Conf.
None
Sub Integrity
None
Sub Availability
None

CVSS:4.0/AV:A/AC:L/AT:N/PR:L/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

Vendor Declared Affected Products

SourceVendorProductVersionPlatforms
CNA Tinycontrol Lan Kontroler V3.5 affected 1.67 semver Not specified
CNA Tinycontrol LK3.9 affected 1.75 semver Not specified
CNA Tinycontrol LK4 affected 1.38 semver Not specified
CNA Tinycontrol TcPDU affected 1.36 semver Not specified

References

ReferenceSourceLinkTags
tinycontrol.pl/en/lk4/downloads [email protected] tinycontrol.pl
tinycontrol.pl/en/archives/lan-controller-35/downloads [email protected] tinycontrol.pl
cert.pl/en/posts/2026/03/CVE-2025-11500 [email protected] cert.pl
tinycontrol.pl/en/lk39/downloads [email protected] tinycontrol.pl
tinycontrol.pl/en/tcpdu/downloads [email protected] tinycontrol.pl
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