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CVE-2021-27250

Estado: ModificadaMedia (6.5)—

This vulnerability allows network-adjacent attackers to disclose sensitive information on affected installations of D-Link DAP-2020 v1.01rc001 Wi-Fi access points. Authentication is not required to exploit this vulnerability. The specific flaw exists within the processing of CGI scripts. When parsing the errorpage request parameter, the process does not properly validate a user-supplied path prior to using it in file operations. An attacker can leverage this vulnerability to disclose stored credentials, leading to further compromise. Was ZDI-CAN-11856.

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)

Dlink — Dap-2020 Firmware

CWE

Referencias

JSON original (NVD)

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  "id": "CVE-2021-27250",
  "cveTags": [],
  "metrics": {
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        "source": "nvd@nist.gov",
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          "baseScore": 3.3,
          "accessVector": "ADJACENT_NETWORK",
          "vectorString": "AV:A/AC:L/Au:N/C:P/I:N/A:N",
          "authentication": "NONE",
          "integrityImpact": "NONE",
          "accessComplexity": "LOW",
          "availabilityImpact": "NONE",
          "confidentialityImpact": "PARTIAL"
        },
        "acInsufInfo": false,
        "impactScore": 2.9,
        "baseSeverity": "LOW",
        "obtainAllPrivilege": false,
        "exploitabilityScore": 6.5,
        "obtainUserPrivilege": false,
        "obtainOtherPrivilege": false,
        "userInteractionRequired": false
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          "vectorString": "CVSS:3.0/AV:A/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N",
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          "userInteraction": "NONE",
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  "affected": [
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      "affectedData": [
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          "vendor": "D-Link",
          "product": "DAP-2020",
          "versions": [
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              "version": "v1.01rc001"
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  "published": "2021-04-14T16:15:13.533",
  "references": [
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      "url": "https://supportannouncement.us.dlink.com/announcement/publication.aspx?name=SAP10201",
      "tags": [
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        "Vendor Advisory"
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  "vulnStatus": "Modified",
  "weaknesses": [
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      "source": "zdi-disclosures@trendmicro.com",
      "description": [
        {
          "lang": "en",
          "value": "CWE-73"
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  ],
  "descriptions": [
    {
      "lang": "en",
      "value": "This vulnerability allows network-adjacent attackers to disclose sensitive information on affected installations of D-Link DAP-2020 v1.01rc001 Wi-Fi access points. Authentication is not required to exploit this vulnerability. The specific flaw exists within the processing of CGI scripts. When parsing the errorpage request parameter, the process does not properly validate a user-supplied path prior to using it in file operations. An attacker can leverage this vulnerability to disclose stored credentials, leading to further compromise. Was ZDI-CAN-11856."
    },
    {
      "lang": "es",
      "value": "Esta vulnerabilidad permite a atacantes adyacentes a la red divulgar información confidencial sobre las instalaciones afectadas de los puntos de acceso Wi-Fi D-Link DAP-2020 versión v1.01rc001. No es requerida una autenticación para explotar esta vulnerabilidad. El fallo específico se presenta dentro del procesamiento de scripts CGI. Cuando se analiza el parámetro de petición errorpage, el proceso no comprueba apropiadamente una ruta suministrada por el usuario antes de usarla en operaciones de archivo. Un atacante puede aprovechar esta vulnerabilidad para divulgar las credenciales almacenadas, conllevando un mayor compromiso. Era ZDI-CAN-11856"
    }
  ],
  "lastModified": "2026-06-17T03:44:32.873",
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