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CVE-2020-19203

Estado: ModificadaMedia (5.4)—

An authenticated Cross-Site Scripting (XSS) vulnerability was found in widgets/widgets/wake_on_lan_widget.php, a component of the pfSense software WebGUI, on version 2.4.4-p2 and earlier. The widget did not encode the descr (description) parameter of wake-on-LAN entries in its output, leading to a possible stored XSS.

CVSS

Probabilidad de explotación (EPSS)

EPSS (Exploit Prediction Scoring System, de FIRST) estima la probabilidad de que una vulnerabilidad sea explotada en 30 días. Complementa a CVSS (impacto) y a CISA KEV (explotación confirmada).

Tecnologías afectadas (1)

Netgate — Pfsense

CWE

Referencias

JSON original (NVD)

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{
  "id": "CVE-2020-19203",
  "cveTags": [],
  "metrics": {
    "cvssMetricV2": [
      {
        "type": "Primary",
        "source": "nvd@nist.gov",
        "cvssData": {
          "version": "2.0",
          "baseScore": 3.5,
          "accessVector": "NETWORK",
          "vectorString": "AV:N/AC:M/Au:S/C:N/I:P/A:N",
          "authentication": "SINGLE",
          "integrityImpact": "PARTIAL",
          "accessComplexity": "MEDIUM",
          "availabilityImpact": "NONE",
          "confidentialityImpact": "NONE"
        },
        "acInsufInfo": false,
        "impactScore": 2.9,
        "baseSeverity": "LOW",
        "obtainAllPrivilege": false,
        "exploitabilityScore": 6.8,
        "obtainUserPrivilege": false,
        "obtainOtherPrivilege": false,
        "userInteractionRequired": true
      }
    ],
    "cvssMetricV31": [
      {
        "type": "Primary",
        "source": "nvd@nist.gov",
        "cvssData": {
          "scope": "CHANGED",
          "version": "3.1",
          "baseScore": 5.4,
          "attackVector": "NETWORK",
          "baseSeverity": "MEDIUM",
          "vectorString": "CVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:C/C:L/I:L/A:N",
          "integrityImpact": "LOW",
          "userInteraction": "REQUIRED",
          "attackComplexity": "LOW",
          "availabilityImpact": "NONE",
          "privilegesRequired": "LOW",
          "confidentialityImpact": "LOW"
        },
        "impactScore": 2.7,
        "exploitabilityScore": 2.3
      }
    ]
  },
  "affected": [
    {
      "source": "cve@mitre.org",
      "affectedData": [
        {
          "vendor": "n/a",
          "product": "n/a",
          "versions": [
            {
              "status": "affected",
              "version": "n/a"
            }
          ]
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      ]
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  ],
  "published": "2021-07-12T16:15:08.413",
  "references": [
    {
      "url": "https://docs.netgate.com/pfsense/en/latest/releases/2-4-4-p3.html",
      "tags": [
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      "tags": [
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        "Vendor Advisory"
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      "source": "cve@mitre.org"
    },
    {
      "url": "https://docs.netgate.com/pfsense/en/latest/releases/2-4-4-p3.html",
      "tags": [
        "Vendor Advisory"
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    },
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      "url": "https://gist.github.com/dharmeshbaskaran/55d546496bfb0ba28117e846d8b785db",
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      "tags": [
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        "Release Notes",
        "Vendor Advisory"
      ],
      "source": "af854a3a-2127-422b-91ae-364da2661108"
    }
  ],
  "vulnStatus": "Modified",
  "weaknesses": [
    {
      "type": "Primary",
      "source": "nvd@nist.gov",
      "description": [
        {
          "lang": "en",
          "value": "CWE-79"
        }
      ]
    }
  ],
  "descriptions": [
    {
      "lang": "en",
      "value": "An authenticated Cross-Site Scripting (XSS) vulnerability was found in widgets/widgets/wake_on_lan_widget.php, a component of the pfSense software WebGUI, on version 2.4.4-p2 and earlier. The widget did not encode the descr (description) parameter of wake-on-LAN entries in its output, leading to a possible stored XSS."
    },
    {
      "lang": "es",
      "value": "Se ha encontrado una vulnerabilidad de Cross-Site Scripting (XSS) autentificada en widgets/widgets/wake_on_lan_widget.php, un componente de la WebGUI del software pfSense, en la versión 2.4.4-p2 y anteriores. El widget no codificaba el parámetro descr (descripción) de las entradas de wake-on-LAN en su salida, lo que conducía a un posible XSS almacenado"
    }
  ],
  "lastModified": "2026-06-17T02:59:40.010",
  "configurations": [
    {
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          "cpeMatch": [
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              "vulnerable": true,
              "matchCriteriaId": "2829D9BD-28CA-4E27-997A-25A96ED9B868",
              "versionEndExcluding": "2.4.4"
            },
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              "matchCriteriaId": "7F038B4C-BC0C-40A8-B547-36F0420CD800"
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          "operator": "OR"
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  "sourceIdentifier": "cve@mitre.org"
}