{ "dataType": "CVE_RECORD", "dataVersion": "5.2", "cveMetadata": { "cveId": "CVE-2026-27867", "assignerOrgId": "ffb98d57-deaa-4918-a669-5225ccc13e39", "state": "PUBLISHED", "assignerShortName": "HackRTU", "dateReserved": "2026-02-24T08:59:28.139Z", "datePublished": "2026-09-25T10:32:58.916Z", "dateUpdated": "2026-09-25T10:43:05.972Z" }, "containers": { "cna": { "providerMetadata": { "orgId": "ffb98d57-deaa-4918-a669-5225ccc13e39", "shortName": "HackRTU", "dateUpdated": "2026-09-25T10:32:58.916Z" }, "title": "CROSS-SITE SCRIPTING (XSS) VIA THE CMDCOOKIE PARAMETER REGESTA SMART HD-PLC OF TELDAT", "datePublic": "2026-09-25T08:00:00.000Z", "problemTypes": [ { "descriptions": [ { "lang": "en", "cweId": "CWE-79", "description": "CWE-79 Improper neutralization of input during web page generation ('cross-site scripting')", "type": "CWE" } ] } ], "impacts": [ { "capecId": "CAPEC-242", "descriptions": [ { "lang": "en", "value": "CAPEC-242 Code Injection" } ] }, { "capecId": "CAPEC-63", "descriptions": [ { "lang": "en", "value": "CAPEC-63 Cross-Site Scripting (XSS)" } ] } ], "affected": [ { "vendor": "Teldat", "product": "Regesta Smart HD-PLC - TLDPH16D2", "versions": [ { "status": "affected", "version": "11.02.06.00.02" }, { "status": "unaffected", "version": "11.02.06.00.03" } ], "defaultStatus": "unknown" } ], "cpeApplicability": [ { "operator": "OR", "nodes": [ { "operator": "OR", "negate": false, "cpeMatch": [ { "vulnerable": true, "criteria": "cpe:2.3:a:teldat:regesta_smart_hd-plc_-_tldph16d2:11.02.06.00.02:*:*:*:*:*:*:*" }, { "vulnerable": false, "criteria": "cpe:2.3:a:teldat:regesta_smart_hd-plc_-_tldph16d2:11.02.06.00.03:*:*:*:*:*:*:*" } ] } ] } ], "descriptions": [ { "lang": "en", "value": "An attacker with access via network to the Regesta Smart HD-PLC of the provider Teldat (in this case, registration action is required) who has the vulnerable firmware version could inject\na specific payload via the parameter \"cmdcookie\" withing the /upgrade/index.html resulting in to a Cross-Site Scripting (XSS). This issue affects Regesta Smart HD-PLC - TLDPH16D2: \n11.02.06.00.02", "supportingMedia": [ { "type": "text/html", "base64": false, "value": "An attacker with access via network to the Regesta Smart HD-PLC of the provider Teldat (in this case, registration action is required) who has the vulnerable firmware version could inject\na specific payload via the parameter \"cmdcookie\" withing the /upgrade/index.html resulting in to a Cross-Site Scripting (XSS). This issue affects Regesta Smart HD-PLC - TLDPH16D2: \n11.02.06.00.02" } ] } ], "references": [ { "url": "https://www.hackrtu.com/blog/CNA-HRTU-0004/", "tags": [ "patch", "technical-description" ] }, { "url": "https://www.hackrtu.com/blog/CNA-CVE-2026-27867/", "tags": [ "patch", "technical-description" ] }, { "url": "https://www.teldat.com/es/", "tags": [ "product" ] }, { "url": "https://support.teldat.com/images/content/docs/Teldat_dm1087_regesta_smart_nessum_series_installation(1).pdf", "tags": [ "product" ] }, { "url": "https://support.teldat.com/portal/supportcontent?page=cgs-customer-global-support&none=true&language=en-US", "tags": [ "patch" ] } ], "metrics": [ { "format": "CVSS", "scenarios": [ { "lang": "en", "value": "GENERAL" } ], "cvssV4_0": { "attackVector": "NETWORK", "attackComplexity": "LOW", "attackRequirements": "NONE", "privilegesRequired": "LOW", "userInteraction": "ACTIVE", "vulnConfidentialityImpact": "LOW", "subConfidentialityImpact": "NONE", "vulnIntegrityImpact": "LOW", "subIntegrityImpact": "NONE", "vulnAvailabilityImpact": "NONE", "subAvailabilityImpact": "NONE", "exploitMaturity": "NOT_DEFINED", "Safety": "NOT_DEFINED", "Automatable": "NOT_DEFINED", "Recovery": "NOT_DEFINED", "valueDensity": "NOT_DEFINED", "vulnerabilityResponseEffort": "NOT_DEFINED", "providerUrgency": "NOT_DEFINED", "version": "4.0", "baseSeverity": "MEDIUM", "baseScore": 4.8, "vectorString": "CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:A/VC:L/VI:L/VA:N/SC:N/SI:N/SA:N" } } ], "solutions": [ { "lang": "en", "value": "The\nprovider has implemented the new version 11.02.06.00.03 which solves the\nsecurity problems detected in the affected version. The end user has to\ndownload the new version in the Teldat - Client Support Portal and\nimplement it in the device ( https://support.teldat.com/portal/supportcontent?page=cgs-customer-global-support&none=true&language=en-US ).", "supportingMedia": [ { "type": "text/html", "base64": false, "value": "

The\nprovider has implemented the new version 11.02.06.00.03 which solves the\nsecurity problems detected in the affected version. The end user has to\ndownload the new version in the Teldat - Client Support Portal and\nimplement it in the device (https://support.teldat.com/portal/supportcontent?page=cgs-customer-global-support&none=true&language=en-US).

" } ] } ], "timeline": [ { "time": "2026-07-10T08:00:00.000Z", "lang": "en", "value": "Vulnerability detection by the researchers" }, { "time": "2026-07-16T08:00:00.000Z", "lang": "en", "value": "Report from researchers to the CNA of HackRTU" }, { "time": "2026-07-16T08:00:00.000Z", "lang": "en", "value": "Report from HackRTU CNA to the provider" }, { "time": "2026-07-21T08:00:00.000Z", "lang": "en", "value": "Second report from HackRTU CNA to the provider" }, { "time": "2026-09-25T08:00:00.000Z", "lang": "en", "value": "Vulnerabilities published by HackRTU's CNA" } ], "credits": [ { "lang": "en", "value": "Aarón Flecha Menéndez", "type": "finder" }, { "lang": "en", "value": "Víctor Bello Cuevas", "type": "finder" } ], "source": { "advisory": "HRTU#0004", "discovery": "EXTERNAL" }, "x_generator": { "engine": "Vulnogram 1.0.5" } }, "adp": [ { "metrics": [ { "other": { "type": "ssvc", "content": { "timestamp": "2026-09-25T10:42:56.136783Z", "id": "CVE-2026-27867", "options": [ { "Exploitation": "none" }, { "Automatable": "no" }, { "Technical Impact": "partial" } ], "role": "CISA Coordinator", "version": "2.0.3" } } } ], "title": "CISA ADP Vulnrichment", "providerMetadata": { "orgId": "134c704f-9b21-4f2e-91b3-4a467353bcc0", "shortName": "CISA-ADP", "dateUpdated": "2026-09-25T10:43:05.972Z" } } ] } }