CVE-2006-5974

Estado: ModificadaAlta (7.8)—
fetchmail 6.3.5 and 6.3.6 before 6.3.6-rc4, when refusing a message delivered via the mda option, allows remote attackers to cause a denial of service (crash) via unknown vectors that trigger a NULL pointer dereference when calling the (1) ferror or (2) fflush functions.
CVSS

Versión: 2.0
Vector: AV:N/AC:L/Au:N/C:N/I:N/A:C
Puntuación base: 7.8
Probabilidad de explotación (EPSS)

Probabilidad de explotación en los próximos 30 días: 3.91%
Percentil entre todas las CVEs puntuadas: 90
Fecha de la puntuación: 6/10/2026
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).
Tecnologías afectadas (1)

Fetchmail — Fetchmail
CWE

CWE-20
Referencias

JSON original (NVD)

Mostrar
{
  "id": "CVE-2006-5974",
  "cveTags": [],
  "metrics": {
    "cvssMetricV2": [
      {
        "type": "Primary",
        "source": "nvd@nist.gov",
        "cvssData": {
          "version": "2.0",
          "baseScore": 7.8,
          "accessVector": "NETWORK",
          "vectorString": "AV:N/AC:L/Au:N/C:N/I:N/A:C",
          "authentication": "NONE",
          "integrityImpact": "NONE",
          "accessComplexity": "LOW",
          "availabilityImpact": "COMPLETE",
          "confidentialityImpact": "NONE"
        },
        "acInsufInfo": false,
        "impactScore": 6.9,
        "baseSeverity": "HIGH",
        "obtainAllPrivilege": false,
        "exploitabilityScore": 10,
        "obtainUserPrivilege": false,
        "obtainOtherPrivilege": false,
        "userInteractionRequired": false
      }
    ]
  },
  "affected": [
    {
      "source": "cve@mitre.org",
      "affectedData": [
        {
          "vendor": "n/a",
          "product": "n/a",
          "versions": [
            {
              "status": "affected",
              "version": "n/a"
            }
          ]
        }
      ]
    }
  ],
  "published": "2006-12-31T05:00:00.000",
  "references": [
    {
      "url": "http://fedoranews.org/cms/node/2429",
      "source": "cve@mitre.org"
    },
    {
      "url": "http://fetchmail.berlios.de/fetchmail-SA-2006-03.txt",
      "source": "cve@mitre.org"
    },
    {
      "url": "http://osvdb.org/31836",
      "source": "cve@mitre.org"
    },
    {
      "url": "http://secunia.com/advisories/23631",
      "tags": [
        "Vendor Advisory"
      ],
      "source": "cve@mitre.org"
    },
    {
      "url": "http://secunia.com/advisories/23804",
      "tags": [
        "Vendor Advisory"
      ],
      "source": "cve@mitre.org"
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    {
      "url": "http://secunia.com/advisories/23838",
      "tags": [
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      ],
      "source": "cve@mitre.org"
    },
    {
      "url": "http://secunia.com/advisories/23923",
      "tags": [
        "Vendor Advisory"
      ],
      "source": "cve@mitre.org"
    },
    {
      "url": "http://secunia.com/advisories/24151",
      "tags": [
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      "source": "cve@mitre.org"
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    {
      "url": "http://security.gentoo.org/glsa/glsa-200701-13.xml",
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    {
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    {
      "url": "http://www.novell.com/linux/security/advisories/2007_4_sr.html",
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    {
      "url": "http://www.openpkg.com/security/advisories/OpenPKG-SA-2007.004.html",
      "source": "cve@mitre.org"
    },
    {
      "url": "http://www.securityfocus.com/archive/1/456114/100/0/threaded",
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    {
      "url": "http://www.securityfocus.com/bid/21902",
      "tags": [
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      "source": "cve@mitre.org"
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    {
      "url": "http://www.trustix.org/errata/2007/0007",
      "source": "cve@mitre.org"
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    {
      "url": "http://www.vupen.com/english/advisories/2007/0087",
      "source": "cve@mitre.org"
    },
    {
      "url": "http://www.vupen.com/english/advisories/2007/0088",
      "source": "cve@mitre.org"
    },
    {
      "url": "http://fedoranews.org/cms/node/2429",
      "source": "af854a3a-2127-422b-91ae-364da2661108"
    },
    {
      "url": "http://fetchmail.berlios.de/fetchmail-SA-2006-03.txt",
      "source": "af854a3a-2127-422b-91ae-364da2661108"
    },
    {
      "url": "http://osvdb.org/31836",
      "source": "af854a3a-2127-422b-91ae-364da2661108"
    },
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    {
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    },
    {
      "url": "http://secunia.com/advisories/23838",
      "tags": [
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    },
    {
      "url": "http://secunia.com/advisories/23923",
      "tags": [
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      ],
      "source": "af854a3a-2127-422b-91ae-364da2661108"
    },
    {
      "url": "http://secunia.com/advisories/24151",
      "tags": [
        "Vendor Advisory"
      ],
      "source": "af854a3a-2127-422b-91ae-364da2661108"
    },
    {
      "url": "http://security.gentoo.org/glsa/glsa-200701-13.xml",
      "source": "af854a3a-2127-422b-91ae-364da2661108"
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    {
      "url": "http://securitytracker.com/id?1017479",
      "source": "af854a3a-2127-422b-91ae-364da2661108"
    },
    {
      "url": "http://slackware.com/security/viewer.php?l=slackware-security&y=2007&m=slackware-security.517995",
      "source": "af854a3a-2127-422b-91ae-364da2661108"
    },
    {
      "url": "http://www.novell.com/linux/security/advisories/2007_4_sr.html",
      "source": "af854a3a-2127-422b-91ae-364da2661108"
    },
    {
      "url": "http://www.openpkg.com/security/advisories/OpenPKG-SA-2007.004.html",
      "source": "af854a3a-2127-422b-91ae-364da2661108"
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      "source": "af854a3a-2127-422b-91ae-364da2661108"
    },
    {
      "url": "http://www.securityfocus.com/bid/21902",
      "tags": [
        "Patch"
      ],
      "source": "af854a3a-2127-422b-91ae-364da2661108"
    },
    {
      "url": "http://www.trustix.org/errata/2007/0007",
      "source": "af854a3a-2127-422b-91ae-364da2661108"
    },
    {
      "url": "http://www.vupen.com/english/advisories/2007/0087",
      "source": "af854a3a-2127-422b-91ae-364da2661108"
    },
    {
      "url": "http://www.vupen.com/english/advisories/2007/0088",
      "source": "af854a3a-2127-422b-91ae-364da2661108"
    }
  ],
  "vulnStatus": "Modified",
  "weaknesses": [
    {
      "type": "Primary",
      "source": "nvd@nist.gov",
      "description": [
        {
          "lang": "en",
          "value": "CWE-20"
        }
      ]
    }
  ],
  "descriptions": [
    {
      "lang": "en",
      "value": "fetchmail 6.3.5 and 6.3.6 before 6.3.6-rc4, when refusing a message delivered via the mda option, allows remote attackers to cause a denial of service (crash) via unknown vectors that trigger a NULL pointer dereference when calling the (1) ferror or (2) fflush functions."
    },
    {
      "lang": "es",
      "value": "fetchmail 6.3.5 y 6.3.6-rc4, cuando rechazan un mensaje entregado mediante la opción mda, permite a atacantes remotos provocar una denegación de servicio (caída) mediante vectores desconocidos que disparan una referencia a puntero nulo cuando se llama a las funciones (1) ferror o (2) fflush."
    }
  ],
  "lastModified": "2026-06-16T22:32:14.393",
  "configurations": [
    {
      "nodes": [
        {
          "negate": false,
          "cpeMatch": [
            {
              "criteria": "cpe:2.3:a:fetchmail:fetchmail:6.3.5:*:*:*:*:*:*:*",
              "vulnerable": true,
              "matchCriteriaId": "5D09BB43-6CBA-499B-91D1-BA256A65E40D"
            },
            {
              "criteria": "cpe:2.3:a:fetchmail:fetchmail:6.3.6:rc1:*:*:*:*:*:*",
              "vulnerable": true,
              "matchCriteriaId": "B98AFEDF-2BAB-4588-94E0-35AEA5F1B514"
            },
            {
              "criteria": "cpe:2.3:a:fetchmail:fetchmail:6.3.6:rc2:*:*:*:*:*:*",
              "vulnerable": true,
              "matchCriteriaId": "4E8BAB5B-4DBC-4D05-B5E2-591573BC05FF"
            },
            {
              "criteria": "cpe:2.3:a:fetchmail:fetchmail:6.3.6:rc3:*:*:*:*:*:*",
              "vulnerable": true,
              "matchCriteriaId": "02F6E729-A2F2-42AC-A941-F57A0A4E84A0"
            }
          ],
          "operator": "OR"
        }
      ]
    }
  ],
  "vendorComments": [
    {
      "comment": "Not vulnerable.  This issue does not affect the versions of fetchmail distributed with Red Hat Enterprise Linux 2.1, 3, or 4.",
      "lastModified": "2007-01-11T00:00:00",
      "organization": "Red Hat"
    }
  ],
  "sourceIdentifier": "cve@mitre.org"
}