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CVE-2009-1535

Estado: ModificadaAlta (7.5)—

The WebDAV extension in Microsoft Internet Information Services (IIS) 5.1 and 6.0 allows remote attackers to bypass URI-based protection mechanisms, and list folders or read, create, or modify files, via a %c0%af (Unicode / character) at an arbitrary position in the URI, as demonstrated by inserting %c0%af into a "/protected/" initial pathname component to bypass the password protection on the protected\ folder, aka "IIS 5.1 and 6.0 WebDAV Authentication Bypass Vulnerability," a different vulnerability than CVE-2009-1122.

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)

Microsoft — Internet Information Services

CWE

Referencias

JSON original (NVD)

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{
  "id": "CVE-2009-1535",
  "cveTags": [],
  "metrics": {
    "cvssMetricV2": [
      {
        "type": "Primary",
        "source": "nvd@nist.gov",
        "cvssData": {
          "version": "2.0",
          "baseScore": 7.5,
          "accessVector": "NETWORK",
          "vectorString": "AV:N/AC:L/Au:N/C:P/I:P/A:P",
          "authentication": "NONE",
          "integrityImpact": "PARTIAL",
          "accessComplexity": "LOW",
          "availabilityImpact": "PARTIAL",
          "confidentialityImpact": "PARTIAL"
        },
        "acInsufInfo": false,
        "impactScore": 6.4,
        "baseSeverity": "HIGH",
        "obtainAllPrivilege": false,
        "exploitabilityScore": 10,
        "obtainUserPrivilege": false,
        "obtainOtherPrivilege": false,
        "userInteractionRequired": false
      }
    ]
  },
  "affected": [
    {
      "source": "secure@microsoft.com",
      "affectedData": [
        {
          "vendor": "n/a",
          "product": "n/a",
          "versions": [
            {
              "status": "affected",
              "version": "n/a"
            }
          ]
        }
      ]
    }
  ],
  "published": "2009-06-10T14:30:00.170",
  "references": [
    {
      "url": "http://archives.neohapsis.com/archives/fulldisclosure/2009-05/0135.html",
      "tags": [
        "Broken Link"
      ],
      "source": "secure@microsoft.com"
    },
    {
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      "tags": [
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      ],
      "source": "secure@microsoft.com"
    },
    {
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      "tags": [
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    },
    {
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      "tags": [
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    },
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    {
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      "source": "secure@microsoft.com"
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    },
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    },
    {
      "url": "http://blog.zoller.lu/2009/05/iis-6-webdac-auth-bypass-and-data.html",
      "tags": [
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      "source": "af854a3a-2127-422b-91ae-364da2661108"
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    {
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    {
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      "tags": [
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    },
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      "tags": [
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        "Vendor Advisory"
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      "source": "af854a3a-2127-422b-91ae-364da2661108"
    },
    {
      "url": "https://oval.cisecurity.org/repository/search/definition/oval%3Aorg.mitre.oval%3Adef%3A6029",
      "tags": [
        "Third Party Advisory"
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      "source": "af854a3a-2127-422b-91ae-364da2661108"
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  "vulnStatus": "Modified",
  "weaknesses": [
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      "type": "Primary",
      "source": "nvd@nist.gov",
      "description": [
        {
          "lang": "en",
          "value": "CWE-287"
        }
      ]
    }
  ],
  "descriptions": [
    {
      "lang": "en",
      "value": "The WebDAV extension in Microsoft Internet Information Services (IIS) 5.1 and 6.0 allows remote attackers to bypass URI-based protection mechanisms, and list folders or read, create, or modify files, via a %c0%af (Unicode / character) at an arbitrary position in the URI, as demonstrated by inserting %c0%af into a \"/protected/\" initial pathname component to bypass the password protection on the protected\\ folder, aka \"IIS 5.1 and 6.0 WebDAV Authentication Bypass Vulnerability,\" a different vulnerability than CVE-2009-1122."
    },
    {
      "lang": "es",
      "value": "La extensión de WebDAV en Microsoft Internet Information Services (IIS) v5.1 y v6.0 permite a atacantes remotos eludir los mecanismos de protección basados en URL, y listar carpetas o leer, crear o modificar archivos, a través de un %c0%af (Unicode / carácter) en una posición arbitraria en la URL, como se ha demostrado mediante la inserción de %c0%af en la ruta inicial de componente \"/protected/\" para evitar la protección por contraseña en la carpeta protected\\ , alias \"IIS v5.1 y v6.0 Vulnerabilidad de evasión de autenticación WebDAV\"."
    }
  ],
  "lastModified": "2026-06-16T23:07:28.580",
  "configurations": [
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}