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CVE-2006-4775

Estado: ModificadaAlta (7.8)—

The VLAN Trunking Protocol (VTP) feature in Cisco IOS 12.1(19) and CatOS allows remote attackers to cause a denial of service by sending a VTP update with a revision value of 0x7FFFFFFF, which is incremented to 0x80000000 and is interpreted as a negative number in a signed context.

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 (2)

Cisco — CatosCisco — IOS

CWE

Referencias

JSON original (NVD)

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{
  "id": "CVE-2006-4775",
  "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": "2006-09-14T00:07:00.000",
  "references": [
    {
      "url": "http://secunia.com/advisories/21896",
      "tags": [
        "Vendor Advisory"
      ],
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    },
    {
      "url": "http://secunia.com/advisories/21902",
      "tags": [
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      "source": "cve@mitre.org"
    },
    {
      "url": "http://securitytracker.com/id?1016843",
      "source": "cve@mitre.org"
    },
    {
      "url": "http://www.cisco.com/warp/public/707/cisco-sr-20060913-vtp.shtml",
      "tags": [
        "Patch"
      ],
      "source": "cve@mitre.org"
    },
    {
      "url": "http://www.kb.cert.org/vuls/id/175148",
      "tags": [
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      ],
      "source": "cve@mitre.org"
    },
    {
      "url": "http://www.osvdb.org/28776",
      "source": "cve@mitre.org"
    },
    {
      "url": "http://www.phenoelit.de/stuff/CiscoVTP.txt",
      "source": "cve@mitre.org"
    },
    {
      "url": "http://www.securityfocus.com/archive/1/445896/100/0/threaded",
      "source": "cve@mitre.org"
    },
    {
      "url": "http://www.securityfocus.com/archive/1/445938/100/0/threaded",
      "source": "cve@mitre.org"
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    {
      "url": "http://www.securityfocus.com/bid/19998",
      "source": "cve@mitre.org"
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    {
      "url": "http://www.vupen.com/english/advisories/2006/3600",
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      "url": "http://www.cisco.com/warp/public/707/cisco-sr-20060913-vtp.shtml",
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    {
      "url": "http://www.osvdb.org/28776",
      "source": "af854a3a-2127-422b-91ae-364da2661108"
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    {
      "url": "http://www.phenoelit.de/stuff/CiscoVTP.txt",
      "source": "af854a3a-2127-422b-91ae-364da2661108"
    },
    {
      "url": "http://www.securityfocus.com/archive/1/445896/100/0/threaded",
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      "url": "http://www.securityfocus.com/archive/1/445938/100/0/threaded",
      "source": "af854a3a-2127-422b-91ae-364da2661108"
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    {
      "url": "http://www.securityfocus.com/bid/19998",
      "source": "af854a3a-2127-422b-91ae-364da2661108"
    },
    {
      "url": "http://www.vupen.com/english/advisories/2006/3600",
      "tags": [
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      ],
      "source": "af854a3a-2127-422b-91ae-364da2661108"
    },
    {
      "url": "https://exchange.xforce.ibmcloud.com/vulnerabilities/28925",
      "source": "af854a3a-2127-422b-91ae-364da2661108"
    }
  ],
  "vulnStatus": "Modified",
  "weaknesses": [
    {
      "type": "Primary",
      "source": "nvd@nist.gov",
      "description": [
        {
          "lang": "en",
          "value": "CWE-399"
        }
      ]
    }
  ],
  "descriptions": [
    {
      "lang": "en",
      "value": "The VLAN Trunking Protocol (VTP) feature in Cisco IOS 12.1(19) and CatOS allows remote attackers to cause a denial of service by sending a VTP update with a revision value of 0x7FFFFFFF, which is incremented to 0x80000000 and is interpreted as a negative number in a signed context."
    },
    {
      "lang": "es",
      "value": "El VLAN Trunking Protocol (VTP) característico en Cisco IOS 12.1(19) y CatOS permite a un atacante remoto provocar una denegación de servicio con el envío de una actualización de VTP con un valor de revisión de 0x7FFFFFFF, el cual se incrementa a 0x80000000 y es interpretado como un número negativo en un contexto de señales."
    }
  ],
  "lastModified": "2026-06-16T22:29:46.357",
  "configurations": [
    {
      "nodes": [
        {
          "negate": false,
          "cpeMatch": [
            {
              "criteria": "cpe:2.3:o:cisco:ios:12.1\\(19\\):*:*:*:*:*:*:*",
              "vulnerable": true,
              "matchCriteriaId": "4944AFEF-D002-4C86-958A-4EB753399FB5"
            }
          ],
          "operator": "OR"
        }
      ]
    },
    {
      "nodes": [
        {
          "negate": false,
          "cpeMatch": [
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              "criteria": "cpe:2.3:o:cisco:catos:*:*:*:*:*:*:*:*",
              "vulnerable": true,
              "matchCriteriaId": "CE3424FF-8507-4C7A-8858-EA89931A74DB"
            }
          ],
          "operator": "OR"
        }
      ]
    }
  ],
  "sourceIdentifier": "cve@mitre.org"
}