CVE-2026-27867
CROSS-SITE SCRIPTING (XSS) VIA THE CMDCOOKIE PARAMETER REGESTA SMART HD-PLC OF TELDAT
- State
- Published
- Severity
- 4.8 Medium
- Published
- Sep 25, 2026
- Updated
- Sep 25, 2026
- Reserved
- Feb 24, 2026
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 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
Scores
| CVSS | Score | Vector | Source |
|---|---|---|---|
| 4.0 | 4.8 Medium | 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 | HackRTU |
Weaknesses
- CWE-79 Improper neutralization of input during web page generation ('cross-site scripting')
Affected Products
| Product | Versions |
|---|---|
Regesta Smart HD-PLC - TLDPH16D2Teldat |
|
References
- https://www.hackrtu.com/blog/CNA-HRTU-0004/patchtechnical-description
- https://www.hackrtu.com/blog/CNA-CVE-2026-27867/patchtechnical-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
Every record here comes from the CVE Program’s CVE List. © 1999–2026 The MITRE Corporation. CVE is a registered trademark of The MITRE Corporation. The records are reproduced under the CVE Program terms of use.