CVE-2026-27870: CWE-79 Improper neutralization of input during web page generation ('cross-site scripting') in Teldat Regesta Smart HD-PLC - TLDPH16D2
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.
AI Analysis
Technical Summary
This vulnerability (CVE-2026-27870) involves improper neutralization of input during web page generation (CWE-79) in the Teldat Regesta Smart HD-PLC - TLDPH16D2. Specifically, an attacker with network access and registration rights can inject malicious JavaScript code into the 'Hostname' field of the configuration file. This injected code is executed in the context of the /upgrade/query.php?cmd=p+3%3Bversion endpoint, resulting in a cross-site scripting (XSS) vulnerability. The affected version is exactly 11.02.05.10.02. There is no vendor advisory or patch information available, and no known exploits in the wild have been reported.
Potential Impact
Successful exploitation allows an attacker with network access and registration privileges to execute arbitrary JavaScript in the context of the affected device's web interface. This could lead to session hijacking, unauthorized actions, or other client-side impacts depending on the victim's interaction with the device's web UI. The CVSS 4.0 base score is 4.8 (medium severity), reflecting the need for privileges and user interaction.
Mitigation Recommendations
Patch status is not yet confirmed — check the vendor advisory for current remediation guidance. Until a fix is available, restrict network access to the device's management interface to trusted users only, and limit registration privileges to trusted administrators. Monitor vendor communications for updates or patches addressing this vulnerability.
CVE-2026-27870: CWE-79 Improper neutralization of input during web page generation ('cross-site scripting') in Teldat Regesta Smart HD-PLC - TLDPH16D2
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.
CVSS v4.0
Score 4.8medium
Affected software
Weaknesses
AI-Powered Analysis
Machine-generated threat intelligence
Technical Analysis
This vulnerability (CVE-2026-27870) involves improper neutralization of input during web page generation (CWE-79) in the Teldat Regesta Smart HD-PLC - TLDPH16D2. Specifically, an attacker with network access and registration rights can inject malicious JavaScript code into the 'Hostname' field of the configuration file. This injected code is executed in the context of the /upgrade/query.php?cmd=p+3%3Bversion endpoint, resulting in a cross-site scripting (XSS) vulnerability. The affected version is exactly 11.02.05.10.02. There is no vendor advisory or patch information available, and no known exploits in the wild have been reported.
Potential Impact
Successful exploitation allows an attacker with network access and registration privileges to execute arbitrary JavaScript in the context of the affected device's web interface. This could lead to session hijacking, unauthorized actions, or other client-side impacts depending on the victim's interaction with the device's web UI. The CVSS 4.0 base score is 4.8 (medium severity), reflecting the need for privileges and user interaction.
Mitigation Recommendations
Patch status is not yet confirmed — check the vendor advisory for current remediation guidance. Until a fix is available, restrict network access to the device's management interface to trusted users only, and limit registration privileges to trusted administrators. Monitor vendor communications for updates or patches addressing this vulnerability.
Technical Details
- Data Version
- 5.2
- Assigner Short Name
- HackRTU
- Date Reserved
- 2026-02-24T08:59:28.139Z
- Cvss Version
- 4.0
- State
- PUBLISHED
- Remediation Level
- null
Threat ID: 6a326cb20b89be688818427f
Added to database: 6/17/2026, 9:45:22 AM
Last enriched: 6/17/2026, 10:00:48 AM
Last updated: 6/17/2026, 5:23:26 PM
Views: 5
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