{"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&nbsp;via the parameter \"cmdcookie\" withing the<i> /upgrade/index.html</i> resulting in to a Cross-Site Scripting (XSS).&nbsp;This issue affects Regesta Smart HD-PLC - TLDPH16D2:&nbsp;\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":"<p>The\nprovider has implemented the new version <b>11.02.06.00.03 </b>which solves the\nsecurity problems detected in the affected version. The end user has to\ndownload the new version in the <b>Teldat - Client Support Portal</b> and\nimplement it in the device (<a href=\"https://support.teldat.com/portal/supportcontent?page=cgs-customer-global-support&amp;none=true&amp;language=en-US\">https://support.teldat.com/portal/supportcontent?page=cgs-customer-global-support&amp;none=true&amp;language=en-US</a>).</p>"}]}],"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"}}]}}