CVE-2026-27870
CROSS-SITE SCRIPTING (XSS) VIA MALICIOUS FILE UPLOAD ON REGESTA SMART HD-PLC OF TELDAT
- State
- Published
- Severity
- 4.8 Medium
- Published
- Jun 17, 2026
- Updated
- Jul 1, 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 software could, introduce arbitrary JavaScript by injecting a Cross-site Scripting (XSS) payload into the 'Hostname' field of the configuration file resulting in a XSS in the path /upgrade/query.php?cmd=p+3%3Bversion. This issue affects Regesta Smart HD-PLC - TLDPH16D2: 11.02.05.10.02.
Scores
| CVSS | Score | Vector | Source |
|---|---|---|---|
| 4.0 | 4.8 Medium | CVSS:4.0/AV:N/AC:L/AT:N/PR:H/UI:P/VC:L/VI:N/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-0003/technical-descriptionpatch
- https://www.hackrtu.com/blog/CNA-CVE-2026-27870/technical-descriptionpatch
- 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
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