CVE-2009-2511

Estado: ModificadaAlta (7.5)—💥 Exploit

Integer overflow in the CryptoAPI component in Microsoft Windows 2000 SP4, Windows XP SP2 and SP3, Windows Server 2003 SP2, Windows Vista Gold, SP1, and SP2, Windows Server 2008 Gold, SP2, and R2, and Windows 7 allows man-in-the-middle attackers to spoof arbitrary SSL servers and other entities via an X.509 certificate that has a malformed ASN.1 Object Identifier (OID) and was issued by a legitimate Certification Authority, aka "Integer Overflow in X.509 Object Identifiers Vulnerability."

CVSS

Versión: 2.0
Vector: AV:N/AC:L/Au:N/C:P/I:P/A:P
Puntuación base: 7.5

Probabilidad de explotación (EPSS)

Probabilidad de explotación en los próximos 30 días: 13%
Percentil entre todas las CVEs puntuadas: 96
Fecha de la puntuación: 7/10/2026

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).

💥 Exploits públicos

Hay código de explotación o plantillas de detección públicos. No es lo mismo que explotación activa confirmada (KEV), pero aumenta el riesgo: parchee con prioridad.

Publicado en Exploit-DB · Microsoft Internet Explorer 8 - X.509 Certificate Common Name Encoding Multiple Security Bypass Vulnerabilities (5/8/2009)

Tecnologías afectadas (6)

Microsoft — Windows 2000 Microsoft — Windows 7 Microsoft — Windows Server 2003 Microsoft — Windows Server 2008 Microsoft — Windows Vista Microsoft — Windows XP

CWE

CWE-189

Referencias

JSON original (NVD)

Mostrar

{
  "id": "CVE-2009-2511",
  "cveTags": [],
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        "type": "Primary",
        "source": "nvd@nist.gov",
        "cvssData": {
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          "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": "2009-10-14T10:30:01.517",
  "references": [
    {
      "url": "http://www.us-cert.gov/cas/techalerts/TA09-286A.html",
      "tags": [
        "US Government Resource"
      ],
      "source": "secure@microsoft.com"
    },
    {
      "url": "https://docs.microsoft.com/en-us/security-updates/securitybulletins/2009/ms09-056",
      "source": "secure@microsoft.com"
    },
    {
      "url": "https://oval.cisecurity.org/repository/search/definition/oval%3Aorg.mitre.oval%3Adef%3A6186",
      "source": "secure@microsoft.com"
    },
    {
      "url": "http://www.us-cert.gov/cas/techalerts/TA09-286A.html",
      "tags": [
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      "source": "af854a3a-2127-422b-91ae-364da2661108"
    },
    {
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    {
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      "source": "af854a3a-2127-422b-91ae-364da2661108"
    }
  ],
  "vulnStatus": "Modified",
  "weaknesses": [
    {
      "type": "Primary",
      "source": "nvd@nist.gov",
      "description": [
        {
          "lang": "en",
          "value": "CWE-189"
        }
      ]
    }
  ],
  "descriptions": [
    {
      "lang": "en",
      "value": "Integer overflow in the CryptoAPI component in Microsoft Windows 2000 SP4, Windows XP SP2 and SP3, Windows Server 2003 SP2, Windows Vista Gold, SP1, and SP2, Windows Server 2008 Gold, SP2, and R2, and Windows 7 allows man-in-the-middle attackers to spoof arbitrary SSL servers and other entities via an X.509 certificate that has a malformed ASN.1 Object Identifier (OID) and was issued by a legitimate Certification Authority, aka \"Integer Overflow in X.509 Object Identifiers Vulnerability.\""
    },
    {
      "lang": "es",
      "value": "Desbordamiento de entero en el componente CryptoAPI en Microsoft Windows 2000 SP4, Windows XP SP2 y SP3, Windows Server 2003 SP2, Windows Vista Gold, SP1, y SP2, Windows Server 2008 Gold, SP2, y R2, y Windows 7 permite a atacantes man-in-the-middle engañar de forma arbitraria a servidores SSL y otras entidades a traves de un certificado X.509 que tiene un identificador de objeto (OID) malformado que fue creado por una certificadora legitima, también conocido como \"Vulnerabilidad de desbordamiento de entero en identificadores de objeto X.509\"."
    }
  ],
  "lastModified": "2026-06-16T23:09:36.713",
  "configurations": [
    {
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              "matchCriteriaId": "E33796DB-4523-4F04-B564-ADF030553D51"
            },
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  "sourceIdentifier": "secure@microsoft.com"
}