Medium 4.8Published Sep 25, 2026

CVE-2026-27867CROSS-SITE SCRIPTING (XSS) VIA THE CMDCOOKIE PARAMETER REGESTA SMART HD-PLC OF TELDAT

Updated under an hour ago (2026-10-19 08:23 UTC)

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It affects Teldat Regesta Smart HD-PLC - TLDPH16D2. Add what you run to find out whether that includes you.

No exploitation reported and no EPSS estimate yet.

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Every CVE for Teldat Regesta Smart HD-PLC - TLDPH16D2

Exploited in the last 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

CVSS: 4.8 MEDIUM (v4.0, CNA)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
Weakness (CWE): CWE-79
Known exploited: Not in CISA's KEV catalog
EPSS (exploitation in the next 30 days): Not loaded for this CVE
Assigned by: HackRTU
NVD analysis: Deferred
Record last updated: Sep 25, 2026
First seen by InfoSec Signals: Oct 9, 2026

Affected products

Affected products

Teldat Regesta Smart HD-PLC - TLDPH16D2 teldat:regesta_smart_hd_plc_tldph16d2 (from the name)	11.02.06.00.02; 11.02.06.00.03 not affected	CNA record

References

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

The CVE record on cve.org NVD's entry

The CVE record is authoritative. Products marked “from the name” were identified from the CNA's free-text names, not a CPE, and are matched less certainly. This product uses the NVD API but is not endorsed or certified by the NVD.