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CVE-2009-2668

Status: ModifiedHigh (7.8)—

Microsoft Internet Explorer 6 through 6.0.2900.2180 and 7 through 7.0.6000.16473 allows remote attackers to cause a denial of service (CPU consumption) via an XML document composed of a long series of start-tags with no corresponding end-tags, a related issue to CVE-2009-1232.

CVSS

Exploitation probability (EPSS)

EPSS (Exploit Prediction Scoring System, FIRST) estimates how likely a vulnerability is to be exploited in the wild within 30 days. It complements CVSS (impact) and CISA KEV (confirmed exploitation).

Affected technologies (1)

Microsoft — Internet Explorer

CWEs

References

Raw JSON (NVD)

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{
  "id": "CVE-2009-2668",
  "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": "2009-08-05T19:30:01.093",
  "references": [
    {
      "url": "http://archives.neohapsis.com/archives/bugtraq/2009-07/0193.html",
      "source": "cve@mitre.org"
    },
    {
      "url": "http://websecurity.com.ua/3216/",
      "source": "cve@mitre.org"
    },
    {
      "url": "http://archives.neohapsis.com/archives/bugtraq/2009-07/0193.html",
      "source": "af854a3a-2127-422b-91ae-364da2661108"
    },
    {
      "url": "http://websecurity.com.ua/3216/",
      "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": "Microsoft Internet Explorer 6 through 6.0.2900.2180 and 7 through 7.0.6000.16473 allows remote attackers to cause a denial of service (CPU consumption) via an XML document composed of a long series of start-tags with no corresponding end-tags, a related issue to CVE-2009-1232."
    },
    {
      "lang": "es",
      "value": "Microsoft Internet Explorer v6 hasta v6.0.2900.2180 y v7 hasta v7.0.6000.16473, permite a atacantes remotos causar una denegación de servicio (consumo CPU) a través de un documento XML compuesto de una serie larga de start-targs que no corresponden con end-tags, relacionado con el asunto CVE-2009-1232."
    }
  ],
  "lastModified": "2026-06-16T23:09:57.590",
  "configurations": [
    {
      "nodes": [
        {
          "negate": false,
          "cpeMatch": [
            {
              "criteria": "cpe:2.3:a:microsoft:internet_explorer:6:*:*:*:*:*:*:*",
              "vulnerable": true,
              "matchCriteriaId": "693D3C1C-E3E4-49DB-9A13-44ADDFF82507"
            },
            {
              "criteria": "cpe:2.3:a:microsoft:internet_explorer:7:*:*:*:*:*:*:*",
              "vulnerable": true,
              "matchCriteriaId": "1A33FA7F-BB2A-4C66-B608-72997A2BD1DB"
            }
          ],
          "operator": "OR"
        }
      ]
    }
  ],
  "sourceIdentifier": "cve@mitre.org"
}