CVE-2002-0823

Estado: ModificadaAlta (7.5)—💥 Exploit

Buffer overflow in Winhlp32.exe allows remote attackers to execute arbitrary code via an HTML document that calls the HTML Help ActiveX control (HHCtrl.ocx) with a long pathname in the Item parameter.

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: 26%
Percentil entre todas las CVEs puntuadas: 98
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 Windows 95/98/2000/NT 4.0 - WinHlp Item Buffer Overflow (27/5/2002)

Tecnologías afectadas (2)

Microsoft — Windows 2000 Microsoft — Windows Help

CWE

NVD-CWE-Other

Referencias

JSON original (NVD)

Mostrar

{
  "id": "CVE-2002-0823",
  "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": true,
        "userInteractionRequired": false
      }
    ]
  },
  "affected": [
    {
      "source": "cve@mitre.org",
      "affectedData": [
        {
          "vendor": "n/a",
          "product": "n/a",
          "versions": [
            {
              "status": "affected",
              "version": "n/a"
            }
          ]
        }
      ]
    }
  ],
  "published": "2002-08-12T04:00:00.000",
  "references": [
    {
      "url": "http://marc.info/?l=bugtraq&m=102822806329440&w=2",
      "source": "cve@mitre.org"
    },
    {
      "url": "http://support.microsoft.com/default.aspx?scid=kb%3Ben-us%3Bq293338",
      "source": "cve@mitre.org"
    },
    {
      "url": "http://www.iss.net/security_center/static/9746.php",
      "source": "cve@mitre.org"
    },
    {
      "url": "http://www.osvdb.org/2991",
      "source": "cve@mitre.org"
    },
    {
      "url": "http://www.securityfocus.com/bid/4857",
      "source": "cve@mitre.org"
    },
    {
      "url": "http://marc.info/?l=bugtraq&m=102822806329440&w=2",
      "source": "af854a3a-2127-422b-91ae-364da2661108"
    },
    {
      "url": "http://support.microsoft.com/default.aspx?scid=kb%3Ben-us%3Bq293338",
      "source": "af854a3a-2127-422b-91ae-364da2661108"
    },
    {
      "url": "http://www.iss.net/security_center/static/9746.php",
      "source": "af854a3a-2127-422b-91ae-364da2661108"
    },
    {
      "url": "http://www.osvdb.org/2991",
      "source": "af854a3a-2127-422b-91ae-364da2661108"
    },
    {
      "url": "http://www.securityfocus.com/bid/4857",
      "source": "af854a3a-2127-422b-91ae-364da2661108"
    }
  ],
  "vulnStatus": "Modified",
  "weaknesses": [
    {
      "type": "Primary",
      "source": "nvd@nist.gov",
      "description": [
        {
          "lang": "en",
          "value": "NVD-CWE-Other"
        }
      ]
    }
  ],
  "descriptions": [
    {
      "lang": "en",
      "value": "Buffer overflow in Winhlp32.exe allows remote attackers to execute arbitrary code via an HTML document that calls the HTML Help ActiveX control (HHCtrl.ocx) with a long pathname in the Item parameter."
    },
    {
      "lang": "es",
      "value": "El desbordamiento del búfer en Winhlp32.exe permite a los atacantes remotos ejecutar código arbitrario a través de un documento HTML que llama al control HTML Help ActiveX (HHCtrl.ocx) con una ruta de acceso larga en el parámetro Item."
    }
  ],
  "lastModified": "2026-06-16T21:58:12.247",
  "configurations": [
    {
      "nodes": [
        {
          "negate": false,
          "cpeMatch": [
            {
              "criteria": "cpe:2.3:a:microsoft:windows_help:*:*:*:*:*:*:*:*",
              "vulnerable": true,
              "matchCriteriaId": "81DAEFA8-676E-4E6E-A224-6850A64AC180"
            }
          ],
          "operator": "OR"
        }
      ]
    },
    {
      "nodes": [
        {
          "negate": false,
          "cpeMatch": [
            {
              "criteria": "cpe:2.3:o:microsoft:windows_2000:*:sp1:*:*:*:*:*:*",
              "vulnerable": true,
              "matchCriteriaId": "294EBA01-147B-4DA0-937E-ACBB655EDE53"
            },
            {
              "criteria": "cpe:2.3:o:microsoft:windows_2000:*:sp2:*:*:*:*:*:*",
              "vulnerable": true,
              "matchCriteriaId": "4E8B7346-F2AA-434C-A048-7463EC1BB117"
            }
          ],
          "operator": "OR"
        }
      ]
    }
  ],
  "sourceIdentifier": "cve@mitre.org"
}