FKIE_CVE-2026-27870

Vulnerability from fkie_nvd - Published: 2026-06-17 13:20 - Updated: 2026-06-17 16:18
Severity
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
Summary
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.
References
ffb98d57-deaa-4918-a669-5225ccc13e39https://support.teldat.com/images/content/docs/Teldat_dm1087_regesta_smart_nessum_series_installation(1).pdf
ffb98d57-deaa-4918-a669-5225ccc13e39https://support.teldat.com/portal/supportcontent?page=cgs-customer-global-support&none=true&language=en-US
ffb98d57-deaa-4918-a669-5225ccc13e39https://www.hackrtu.com/blog/CNA-CVE-2026-27870/
ffb98d57-deaa-4918-a669-5225ccc13e39https://www.hackrtu.com/blog/CNA-HRTU-0002/
ffb98d57-deaa-4918-a669-5225ccc13e39https://www.teldat.com/es/
Impacted products
Vendor Product Version
To clipboard 

{
  "affected": [
    {
      "affectedData": [
        {
          "defaultStatus": "unknown",
          "product": "Regesta Smart HD-PLC - TLDPH16D2",
          "vendor": "Teldat",
          "versions": [
            {
              "status": "affected",
              "version": "11.02.05.10.02"
            },
            {
              "status": "unaffected",
              "version": "11.02.06.00.02"
            }
          ]
        }
      ],
      "source": "ffb98d57-deaa-4918-a669-5225ccc13e39"
    }
  ],
  "cveTags": [],
  "descriptions": [
    {
      "lang": "en",
      "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 software could, introduce arbitrary JavaScript by injecting a\u00a0Cross-site Scripting (XSS)\u00a0 payload into the \u0027Hostname\u0027 field of the configuration file resulting in a\u00a0XSS\u00a0in the path /upgrade/query.php?cmd=p+3%3Bversion.\u00a0This issue affects Regesta Smart HD-PLC - TLDPH16D2: \n11.02.05.10.02."
    }
  ],
  "id": "CVE-2026-27870",
  "lastModified": "2026-06-17T16:18:00.113",
  "metrics": {
    "cvssMetricV40": [
      {
        "cvssData": {
          "Automatable": "NOT_DEFINED",
          "Recovery": "NOT_DEFINED",
          "Safety": "NOT_DEFINED",
          "attackComplexity": "LOW",
          "attackRequirements": "NONE",
          "attackVector": "NETWORK",
          "availabilityRequirement": "NOT_DEFINED",
          "baseScore": 4.8,
          "baseSeverity": "MEDIUM",
          "confidentialityRequirement": "NOT_DEFINED",
          "exploitMaturity": "NOT_DEFINED",
          "integrityRequirement": "NOT_DEFINED",
          "modifiedAttackComplexity": "NOT_DEFINED",
          "modifiedAttackRequirements": "NOT_DEFINED",
          "modifiedAttackVector": "NOT_DEFINED",
          "modifiedPrivilegesRequired": "NOT_DEFINED",
          "modifiedSubAvailabilityImpact": "NOT_DEFINED",
          "modifiedSubConfidentialityImpact": "NOT_DEFINED",
          "modifiedSubIntegrityImpact": "NOT_DEFINED",
          "modifiedUserInteraction": "NOT_DEFINED",
          "modifiedVulnAvailabilityImpact": "NOT_DEFINED",
          "modifiedVulnConfidentialityImpact": "NOT_DEFINED",
          "modifiedVulnIntegrityImpact": "NOT_DEFINED",
          "privilegesRequired": "HIGH",
          "providerUrgency": "NOT_DEFINED",
          "subAvailabilityImpact": "NONE",
          "subConfidentialityImpact": "NONE",
          "subIntegrityImpact": "NONE",
          "userInteraction": "PASSIVE",
          "valueDensity": "NOT_DEFINED",
          "vectorString": "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/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",
          "version": "4.0",
          "vulnAvailabilityImpact": "NONE",
          "vulnConfidentialityImpact": "LOW",
          "vulnIntegrityImpact": "NONE",
          "vulnerabilityResponseEffort": "NOT_DEFINED"
        },
        "source": "ffb98d57-deaa-4918-a669-5225ccc13e39",
        "type": "Secondary"
      }
    ],
    "ssvcV203": [
      {
        "source": "134c704f-9b21-4f2e-91b3-4a467353bcc0",
        "ssvcData": {
          "id": "CVE-2026-27870",
          "options": [
            {
              "exploitation": "none"
            },
            {
              "automatable": "no"
            },
            {
              "technicalImpact": "partial"
            }
          ],
          "role": "CISA Coordinator",
          "timestamp": "2026-06-17T12:47:25.070527Z",
          "version": "2.0.3"
        }
      }
    ]
  },
  "published": "2026-06-17T13:20:13.567",
  "references": [
    {
      "source": "ffb98d57-deaa-4918-a669-5225ccc13e39",
      "url": "https://support.teldat.com/images/content/docs/Teldat_dm1087_regesta_smart_nessum_series_installation(1).pdf"
    },
    {
      "source": "ffb98d57-deaa-4918-a669-5225ccc13e39",
      "url": "https://support.teldat.com/portal/supportcontent?page=cgs-customer-global-support\u0026none=true\u0026language=en-US"
    },
    {
      "source": "ffb98d57-deaa-4918-a669-5225ccc13e39",
      "url": "https://www.hackrtu.com/blog/CNA-CVE-2026-27870/"
    },
    {
      "source": "ffb98d57-deaa-4918-a669-5225ccc13e39",
      "url": "https://www.hackrtu.com/blog/CNA-HRTU-0002/"
    },
    {
      "source": "ffb98d57-deaa-4918-a669-5225ccc13e39",
      "url": "https://www.teldat.com/es/"
    }
  ],
  "sourceIdentifier": "ffb98d57-deaa-4918-a669-5225ccc13e39",
  "vulnStatus": "Deferred",
  "weaknesses": [
    {
      "description": [
        {
          "lang": "en",
          "value": "CWE-79"
        }
      ],
      "source": "ffb98d57-deaa-4918-a669-5225ccc13e39",
      "type": "Secondary"
    }
  ]
}


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Forecast uses a logistic model when the trend is rising, or an exponential decay model when the trend is falling. Fitted via linearized least squares.

Sightings

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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.


Detection rules are retrieved from Rulezet.