CVE-2026-27867 – An attacker with access via network to the Regesta Smart HD-PLC of the provider Teldat (in

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
a 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: 
11.02.06.00.02