Vulnerability-Lookup

GHSA-JJ76-67XG-C9GJ

Vulnerability from github – Published: 2026-09-25 12:31 – Updated: 2026-09-25 12:31

Details

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

Severity

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

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JSON

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{
  "affected": [],
  "aliases": [
    "CVE-2026-27867"
  ],
  "database_specific": {
    "cwe_ids": [
      "CWE-79"
    ],
    "github_reviewed": false,
    "github_reviewed_at": null,
    "nvd_published_at": "2026-09-25T11:17:01Z",
    "severity": "MODERATE"
  },
  "details": "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\na specific payload\u00a0via the parameter \"cmdcookie\" withing the /upgrade/index.html resulting in to a Cross-Site Scripting (XSS).\u00a0This issue affects Regesta Smart HD-PLC - TLDPH16D2:\u00a0\n11.02.06.00.02",
  "id": "GHSA-jj76-67xg-c9gj",
  "modified": "2026-09-25T12:31:22Z",
  "published": "2026-09-25T12:31:22Z",
  "references": [
    {
      "type": "ADVISORY",
      "url": "https://nvd.nist.gov/vuln/detail/CVE-2026-27867"
    },
    {
      "type": "WEB",
      "url": "https://support.teldat.com/images/content/docs/Teldat_dm1087_regesta_smart_nessum_series_installation(1).pdf"
    },
    {
      "type": "WEB",
      "url": "https://support.teldat.com/portal/supportcontent?page=cgs-customer-global-support\u0026none=true\u0026language=en-US"
    },
    {
      "type": "WEB",
      "url": "https://www.hackrtu.com/blog/CNA-CVE-2026-27867"
    },
    {
      "type": "WEB",
      "url": "https://www.hackrtu.com/blog/CNA-HRTU-0004"
    },
    {
      "type": "WEB",
      "url": "https://www.teldat.com/es"
    }
  ],
  "schema_version": "1.4.0",
  "severity": [
    {
      "score": "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/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X",
      "type": "CVSS_V4"
    }
  ]
}

CVE-2026-27867 (GCVE-0-2026-27867)

Vulnerability from cvelistv5 – Published: 2026-09-25 10:32 – Updated: 2026-09-25 10:43

Title

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

Summary

Severity

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

SSVC

Exploitation: none Automatable: no Technical Impact: partial

CISA Coordinator · CISA-ADP (v2.0.3)

Decision recorded 2026-09-25 10:42 UTC

CWE

CWE-79 - Improper neutralization of input during web page generation ('cross-site scripting')

Assigner

HackRTU INCIBE root

References

5 references

URL	Tags
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/Te…	product
https://support.teldat.com/portal/supportcontent?…	patch

Impacted products

1 product

Vendor	Product	Version
Teldat	Regesta Smart HD-PLC - TLDPH16D2	Affected: 11.02.06.00.02 Unaffected: 11.02.06.00.03 cpe:2.3:a:teldat:regesta_smart_hd-plc_-_tldph16d2:11.02.06.00.02:::::::*

Date Public

2026-09-25 08:00

Credits

Aarón Flecha Menéndez Víctor Bello Cuevas

Show details on NVD website

JSON

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{
  "containers": {
    "adp": [
      {
        "metrics": [
          {
            "other": {
              "content": {
                "id": "CVE-2026-27867",
                "options": [
                  {
                    "Exploitation": "none"
                  },
                  {
                    "Automatable": "no"
                  },
                  {
                    "Technical Impact": "partial"
                  }
                ],
                "role": "CISA Coordinator",
                "timestamp": "2026-09-25T10:42:56.136783Z",
                "version": "2.0.3"
              },
              "type": "ssvc"
            }
          }
        ],
        "providerMetadata": {
          "dateUpdated": "2026-09-25T10:43:05.972Z",
          "orgId": "134c704f-9b21-4f2e-91b3-4a467353bcc0",
          "shortName": "CISA-ADP"
        },
        "title": "CISA ADP Vulnrichment"
      }
    ],
    "cna": {
      "affected": [
        {
          "defaultStatus": "unknown",
          "product": "Regesta Smart HD-PLC - TLDPH16D2",
          "vendor": "Teldat",
          "versions": [
            {
              "status": "affected",
              "version": "11.02.06.00.02"
            },
            {
              "status": "unaffected",
              "version": "11.02.06.00.03"
            }
          ]
        }
      ],
      "cpeApplicability": [
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          "nodes": [
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              "cpeMatch": [
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                  "criteria": "cpe:2.3:a:teldat:regesta_smart_hd-plc_-_tldph16d2:11.02.06.00.02:*:*:*:*:*:*:*",
                  "vulnerable": true
                },
                {
                  "criteria": "cpe:2.3:a:teldat:regesta_smart_hd-plc_-_tldph16d2:11.02.06.00.03:*:*:*:*:*:*:*",
                  "vulnerable": false
                }
              ],
              "negate": false,
              "operator": "OR"
            }
          ],
          "operator": "OR"
        }
      ],
      "credits": [
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          "lang": "en",
          "type": "finder",
          "value": "Aar\u00f3n Flecha Men\u00e9ndez"
        },
        {
          "lang": "en",
          "type": "finder",
          "value": "V\u00edctor Bello Cuevas"
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      ],
      "datePublic": "2026-09-25T08:00:00.000Z",
      "descriptions": [
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          "supportingMedia": [
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              "type": "text/html",
              "value": "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\na specific payload\u0026nbsp;via the parameter \"cmdcookie\" withing the\u003ci\u003e /upgrade/index.html\u003c/i\u003e resulting in to a Cross-Site Scripting (XSS).\u0026nbsp;This issue affects Regesta Smart HD-PLC - TLDPH16D2:\u0026nbsp;\n11.02.06.00.02"
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        }
      ],
      "impacts": [
        {
          "capecId": "CAPEC-242",
          "descriptions": [
            {
              "lang": "en",
              "value": "CAPEC-242 Code Injection"
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        },
        {
          "capecId": "CAPEC-63",
          "descriptions": [
            {
              "lang": "en",
              "value": "CAPEC-63 Cross-Site Scripting (XSS)"
            }
          ]
        }
      ],
      "metrics": [
        {
          "cvssV4_0": {
            "Automatable": "NOT_DEFINED",
            "Recovery": "NOT_DEFINED",
            "Safety": "NOT_DEFINED",
            "attackComplexity": "LOW",
            "attackRequirements": "NONE",
            "attackVector": "NETWORK",
            "baseScore": 4.8,
            "baseSeverity": "MEDIUM",
            "exploitMaturity": "NOT_DEFINED",
            "privilegesRequired": "LOW",
            "providerUrgency": "NOT_DEFINED",
            "subAvailabilityImpact": "NONE",
            "subConfidentialityImpact": "NONE",
            "subIntegrityImpact": "NONE",
            "userInteraction": "ACTIVE",
            "valueDensity": "NOT_DEFINED",
            "vectorString": "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",
            "version": "4.0",
            "vulnAvailabilityImpact": "NONE",
            "vulnConfidentialityImpact": "LOW",
            "vulnIntegrityImpact": "LOW",
            "vulnerabilityResponseEffort": "NOT_DEFINED"
          },
          "format": "CVSS",
          "scenarios": [
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              "lang": "en",
              "value": "GENERAL"
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      ],
      "providerMetadata": {
        "dateUpdated": "2026-09-25T10:32:58.916Z",
        "orgId": "ffb98d57-deaa-4918-a669-5225ccc13e39",
        "shortName": "HackRTU"
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      "references": [
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          "tags": [
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          "url": "https://www.hackrtu.com/blog/CNA-HRTU-0004/"
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          "url": "https://www.hackrtu.com/blog/CNA-CVE-2026-27867/"
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        {
          "tags": [
            "product"
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          "url": "https://www.teldat.com/es/"
        },
        {
          "tags": [
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          "url": "https://support.teldat.com/images/content/docs/Teldat_dm1087_regesta_smart_nessum_series_installation(1).pdf"
        },
        {
          "tags": [
            "patch"
          ],
          "url": "https://support.teldat.com/portal/supportcontent?page=cgs-customer-global-support\u0026none=true\u0026language=en-US"
        }
      ],
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            {
              "base64": false,
              "type": "text/html",
              "value": "\u003cp\u003eThe\nprovider has implemented the new version \u003cb\u003e11.02.06.00.03 \u003c/b\u003ewhich solves the\nsecurity problems detected in the affected version. The end user has to\ndownload the new version in the \u003cb\u003eTeldat - Client Support Portal\u003c/b\u003e and\nimplement it in the device (\u003ca href=\"https://support.teldat.com/portal/supportcontent?page=cgs-customer-global-support\u0026amp;none=true\u0026amp;language=en-US\"\u003ehttps://support.teldat.com/portal/supportcontent?page=cgs-customer-global-support\u0026amp;none=true\u0026amp;language=en-US\u003c/a\u003e).\u003c/p\u003e"
            }
          ],
          "value": "The\nprovider has implemented the new version 11.02.06.00.03 which solves the\nsecurity problems detected in the affected version. The end user has to\ndownload the new version in the Teldat - Client Support Portal and\nimplement it in the device ( https://support.teldat.com/portal/supportcontent?page=cgs-customer-global-support\u0026none=true\u0026language=en-US )."
        }
      ],
      "source": {
        "advisory": "HRTU#0004",
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      },
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          "lang": "en",
          "time": "2026-07-10T08:00:00.000Z",
          "value": "Vulnerability detection by the researchers"
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          "lang": "en",
          "time": "2026-07-16T08:00:00.000Z",
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          "lang": "en",
          "time": "2026-07-16T08:00:00.000Z",
          "value": "Report from HackRTU CNA to the provider"
        },
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          "lang": "en",
          "time": "2026-07-21T08:00:00.000Z",
          "value": "Second report from HackRTU CNA to the provider"
        },
        {
          "lang": "en",
          "time": "2026-09-25T08:00:00.000Z",
          "value": "Vulnerabilities published by HackRTU\u0027s CNA"
        }
      ],
      "title": "CROSS-SITE SCRIPTING (XSS) VIA THE CMDCOOKIE PARAMETER REGESTA SMART HD-PLC OF TELDAT",
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    "cveId": "CVE-2026-27867",
    "datePublished": "2026-09-25T10:32:58.916Z",
    "dateReserved": "2026-02-24T08:59:28.139Z",
    "dateUpdated": "2026-09-25T10:43:05.972Z",
    "state": "PUBLISHED"
  },
  "dataType": "CVE_RECORD",
  "dataVersion": "5.2"
}

Sightings

Author	Source	Type	Date	Other

Nomenclature

Seen: The vulnerability was mentioned, discussed, or observed by the user.
Confirmed: The vulnerability has been validated from an analyst's perspective.
Published Proof of Concept: A public proof of concept is available for this vulnerability.
Exploited: The vulnerability was observed as exploited by the user who reported the sighting.
Patched: The vulnerability was observed as successfully patched by the user who reported the sighting.
Not exploited: The vulnerability was not observed as exploited by the user who reported the sighting.
Not confirmed: The user expressed doubt about the validity of the vulnerability.
Not patched: The vulnerability was not observed as successfully patched by the user who reported the sighting.

The MITRE ATT&CK techniques below are AI-generated suggestions, inferred from the description of the vulnerability by the CIRCL/vulnerability-attack-technique-classification-roberta-base model, served locally by ML-Gateway. They have not been verified by an analyst and are provided for guidance only.
The approach is described in our paper Mapping CVEs to MITRE ATT&CK Techniques: A Curated Gold-Set Classifier and the Limits of LLM-Assisted Label Expansion.
Browse all ATT&CK techniques and the vulnerabilities related to each.

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Action not permitted

GHSA-JJ76-67XG-C9GJ

CVE-2026-27867 (GCVE-0-2026-27867)

Tags

Sightings

Nomenclature

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