CVE-2026-27867mediumCWE-79

CROSS-SITE SCRIPTING (XSS) VIA THE CMDCOOKIE PARAMETER REGESTA SMART HD-PLC OF TELDAT

13Vexday Risk Score

No sign of exploitation. No public exploitation artifact known so far.

ssvc Trackcvss 4.8epss 0.4%

exploitation probability

0.4%top 72% of all CVEs

observed exploitation

nono source reports it

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

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

Affected products

Teldat · Regesta Smart HD-PLC - TLDPH16D2

References

https://support.teldat.com/images/content/docs/Teldat_dm1087_regesta_smart_nessum_series_installation(1).pdf https://support.teldat.com/portal/supportcontent?page=cgs-customer-global-support&none=true&language=en-US https://www.hackrtu.com/blog/CNA-CVE-2026-27867/https://www.hackrtu.com/blog/CNA-HRTU-0004/https://www.teldat.com/es/