{"dataType": "CVE_RECORD", "dataVersion": "5.2", "cveMetadata": {"cveId": "CVE-2025-11500", "assignerOrgId": "4bb8329e-dd38-46c1-aafb-9bf32bcb93c6", "state": "PUBLISHED", "assignerShortName": "CERT-PL", "dateReserved": "2025-10-08T14:14:53.731Z", "datePublished": "2026-03-16T09:26:14.290Z", "dateUpdated": "2026-03-16T09:26:14.290Z"}, "containers": {"cna": {"affected": [{"defaultStatus": "unaffected", "product": "Lan Kontroler v3.5", "vendor": "tinycontrol", "versions": [{"lessThan": "1.67", "status": "affected", "version": "0", "versionType": "semver"}]}, {"defaultStatus": "unaffected", "product": "LK3.9", "vendor": "tinycontrol", "versions": [{"lessThan": "1.75", "status": "affected", "version": "0", "versionType": "semver"}]}, {"defaultStatus": "unaffected", "product": "LK4", "vendor": "tinycontrol", "versions": [{"lessThan": "1.38", "status": "affected", "version": "0", "versionType": "semver"}]}, {"defaultStatus": "unaffected", "product": "tcPDU", "vendor": "tinycontrol", "versions": [{"lessThan": "1.36", "status": "affected", "version": "0", "versionType": "semver"}]}], "credits": [{"lang": "en", "type": "finder", "value": "Pawe\u0142 R\u00f3\u017ca\u0144ski (Securitum.com)"}], "descriptions": [{"lang": "en", "supportingMedia": [{"base64": false, "type": "text/html", "value": "Tinycontrol devices such as <span style=\"background-color: rgb(255, 255, 255);\">tcPDU and&nbsp;</span>LAN Controllers LK3.5, LK3.9 and LK4&nbsp;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.&nbsp;<br><span style=\"background-color: rgb(255, 255, 255);\">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&nbsp;1.38 (for LK4 - hardware version 4.0).</span><br>"}], "value": "Tinycontrol devices such as tcPDU and\u00a0LAN Controllers LK3.5, LK3.9 and LK4\u00a0have 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.\u00a0\nThis 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\u00a01.38 (for LK4 - hardware version 4.0)."}], "metrics": [{"cvssV4_0": {"Automatable": "NOT_DEFINED", "Recovery": "NOT_DEFINED", "Safety": "NOT_DEFINED", "attackComplexity": "LOW", "attackRequirements": "NONE", "attackVector": "ADJACENT", "baseScore": 8.7, "baseSeverity": "HIGH", "privilegesRequired": "NONE", "providerUrgency": "NOT_DEFINED", "subAvailabilityImpact": "NONE", "subConfidentialityImpact": "NONE", "subIntegrityImpact": "NONE", "userInteraction": "NONE", "valueDensity": "NOT_DEFINED", "vectorString": "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", "version": "4.0", "vulnAvailabilityImpact": "HIGH", "vulnConfidentialityImpact": "HIGH", "vulnIntegrityImpact": "HIGH", "vulnerabilityResponseEffort": "NOT_DEFINED"}, "format": "CVSS", "scenarios": [{"lang": "en", "value": "GENERAL"}]}], "problemTypes": [{"descriptions": [{"cweId": "CWE-261", "description": "CWE-261 Weak Encoding for Password", "lang": "en", "type": "CWE"}]}, {"descriptions": [{"cweId": "CWE-201", "description": "CWE-201 Insertion of Sensitive Information Into Sent Data", "lang": "en", "type": "CWE"}]}], "providerMetadata": {"orgId": "4bb8329e-dd38-46c1-aafb-9bf32bcb93c6", "shortName": "CERT-PL", "dateUpdated": "2026-03-16T09:26:14.290Z"}, "references": [{"tags": ["third-party-advisory"], "url": "https://cert.pl/en/posts/2026/03/CVE-2025-11500/"}, {"tags": ["technical-description"], "url": "https://securitum.com/CVE-2025-11500"}, {"tags": ["release-notes"], "url": "https://tinycontrol.pl/en/archives/lan-controller-35/downloads/#firmware"}, {"tags": ["release-notes"], "url": "https://tinycontrol.pl/en/lk39/downloads/#firmware"}, {"tags": ["release-notes"], "url": "https://tinycontrol.pl/en/lk4/downloads/#firmware"}, {"tags": ["release-notes"], "url": "https://tinycontrol.pl/en/tcpdu/downloads/#firmware"}], "source": {"discovery": "EXTERNAL"}, "title": "Credentials exposure in tinycontrol devices", "workarounds": [{"lang": "en", "supportingMedia": [{"base64": false, "type": "text/html", "value": "Enabling \"Basic Authentication\" option mitigates the risk, because an attacker has to log in first prior to exploitation.&nbsp;"}], "value": "Enabling \"Basic Authentication\" option mitigates the risk, because an attacker has to log in first prior to exploitation."}], "x_generator": {"engine": "Vulnogram 0.2.0"}}}}

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