CVE-2026-27867: Teldat Regesta Smart Hd-PLC - TLDPH16D2

Medium severity, CVSS 4.8. EPSS: 0.4% chance of exploitation in the next 30 days.

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

Affected products

• Teldat Regesta Smart Hd-PLC - TLDPH16D2: version 11.02.06.00.02 only

Published 2026-09-25. Last modified 2026-09-30.