{"id":"CVE-2026-27867","aliases":["EUVD-2026-86931","GHSA-jj76-67xg-c9gj"],"status":"published","title":"CROSS-SITE SCRIPTING (XSS) VIA THE CMDCOOKIE PARAMETER REGESTA SMART HD-PLC OF TELDAT","description":"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","severity":{"version":"4.0","score":4.8,"vector":"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","level":"medium","assessor":"cna","from":"cve"},"epss":{"day":"2026-11-11","score":0.0037,"percentile":0.31301,"model":"v2026.06.15"},"facts":{"in_kev":false,"known_exploited":false,"public_exploit":false,"fix_available":false},"cwes":["CWE-79"],"published":"2026-09-25T10:32:58Z","modified":"2026-09-30T17:32:07Z","products":[{"vendor":"teldat","product":"regesta smart hd-plc - tldph16d2"}],"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\u0026none=true\u0026language=en-US","tags":["patch"]},{"url":"https://nvd.nist.gov/vuln/detail/CVE-2026-27867"},{"url":"https://www.hackrtu.com/blog/CNA-CVE-2026-27867"},{"url":"https://www.hackrtu.com/blog/CNA-HRTU-0004"},{"url":"https://www.teldat.com/es"},{"url":"https://github.com/advisories/GHSA-jj76-67xg-c9gj"}],"sources":{"cve":[{"id":"CVE-2026-27867","title":"CROSS-SITE SCRIPTING (XSS) VIA THE CMDCOOKIE PARAMETER REGESTA SMART HD-PLC OF TELDAT","description":"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","status":"published","published":"2026-09-25T10:32:58.916Z","modified":"2026-09-25T10:43:05.972Z","cvss":[{"version":"4.0","score":4.8,"vector":"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","level":"medium","assessor":"cna"}],"cwes":["CWE-79"],"updated_at":"2026-11-02T14:19:48.826324Z"}],"euvd":[{"id":"EUVD-2026-86931","description":"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","status":"published","published":"2026-09-25T10:32:58Z","modified":"2026-09-25T10:43:05Z","cvss":[{"version":"4.0","score":4.8,"vector":"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","level":"medium"}],"updated_at":"2026-11-02T17:27:55.846756Z"}],"ghsa":[{"id":"GHSA-jj76-67xg-c9gj","title":"An attacker with access via network to the Regesta Smart HD-PLC of the provider Teldat (in this...","description":"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","status":"published","published":"2026-09-25T12:31:22Z","modified":"2026-09-25T12:31:25Z","cvss":[{"version":"4.0","score":4.8,"vector":"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/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","level":"medium"}],"cwes":["CWE-79"],"updated_at":"2026-11-02T15:12:24.75064Z"}],"nvd":[{"id":"CVE-2026-27867","description":"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","status":"published","published":"2026-09-25T11:17:01.203Z","modified":"2026-09-30T17:32:07.107Z","cvss":[{"version":"4.0","score":4.8,"vector":"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/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","level":"medium","assessor":"secondary"}],"cwes":["CWE-79"],"updated_at":"2026-11-02T14:12:51.388161Z"}]}}