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CVE-2000-0439

Status: ModifiedLow (2.6)—

Internet Explorer 4.0 and 5.0 allows a malicious web site to obtain client cookies from another domain by including that domain name and escaped characters in a URL, aka the "Unauthorized Cookie Access" vulnerability.

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-2000-0439",
  "cveTags": [],
  "metrics": {
    "cvssMetricV2": [
      {
        "type": "Primary",
        "source": "nvd@nist.gov",
        "cvssData": {
          "version": "2.0",
          "baseScore": 2.6,
          "accessVector": "NETWORK",
          "vectorString": "AV:N/AC:H/Au:N/C:P/I:N/A:N",
          "authentication": "NONE",
          "integrityImpact": "NONE",
          "accessComplexity": "HIGH",
          "availabilityImpact": "NONE",
          "confidentialityImpact": "PARTIAL"
        },
        "acInsufInfo": false,
        "impactScore": 2.9,
        "baseSeverity": "LOW",
        "obtainAllPrivilege": false,
        "exploitabilityScore": 4.9,
        "obtainUserPrivilege": false,
        "obtainOtherPrivilege": false,
        "userInteractionRequired": true
      }
    ]
  },
  "affected": [
    {
      "source": "cve@mitre.org",
      "affectedData": [
        {
          "vendor": "n/a",
          "product": "n/a",
          "versions": [
            {
              "status": "affected",
              "version": "n/a"
            }
          ]
        }
      ]
    }
  ],
  "published": "2000-05-11T04:00:00.000",
  "references": [
    {
      "url": "http://www.osvdb.org/1326",
      "source": "cve@mitre.org"
    },
    {
      "url": "http://www.securityfocus.com/bid/1194",
      "source": "cve@mitre.org"
    },
    {
      "url": "http://www.securityfocus.com/templates/archive.pike?list=1&msg=20000511135609.D7774%40securityfocus.com",
      "source": "cve@mitre.org"
    },
    {
      "url": "http://www.securityfocus.com/templates/archive.pike?list=1&msg=NDBBKGHPMKBKDDGLDEEHAEHMDIAA.rms2000%40bellatlantic.net",
      "source": "cve@mitre.org"
    },
    {
      "url": "https://docs.microsoft.com/en-us/security-updates/securitybulletins/2000/ms00-033",
      "source": "cve@mitre.org"
    },
    {
      "url": "https://exchange.xforce.ibmcloud.com/vulnerabilities/4447",
      "source": "cve@mitre.org"
    },
    {
      "url": "http://www.osvdb.org/1326",
      "source": "af854a3a-2127-422b-91ae-364da2661108"
    },
    {
      "url": "http://www.securityfocus.com/bid/1194",
      "source": "af854a3a-2127-422b-91ae-364da2661108"
    },
    {
      "url": "http://www.securityfocus.com/templates/archive.pike?list=1&msg=20000511135609.D7774%40securityfocus.com",
      "source": "af854a3a-2127-422b-91ae-364da2661108"
    },
    {
      "url": "http://www.securityfocus.com/templates/archive.pike?list=1&msg=NDBBKGHPMKBKDDGLDEEHAEHMDIAA.rms2000%40bellatlantic.net",
      "source": "af854a3a-2127-422b-91ae-364da2661108"
    },
    {
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      "source": "af854a3a-2127-422b-91ae-364da2661108"
    },
    {
      "url": "https://exchange.xforce.ibmcloud.com/vulnerabilities/4447",
      "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": "Internet Explorer 4.0 and 5.0 allows a malicious web site to obtain client cookies from another domain by including that domain name and escaped characters in a URL, aka the \"Unauthorized Cookie Access\" vulnerability."
    }
  ],
  "lastModified": "2026-06-16T21:51:44.173",
  "configurations": [
    {
      "nodes": [
        {
          "negate": false,
          "cpeMatch": [
            {
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              "vulnerable": true,
              "matchCriteriaId": "1BBF9241-A175-438C-A793-3D245BE2AE35"
            },
            {
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              "vulnerable": true,
              "matchCriteriaId": "8873A08F-D4C7-46FC-8FE5-972644F85ADA"
            },
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            },
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              "matchCriteriaId": "42502347-DD40-4F8C-9861-C0A88A3F8608"
            },
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            },
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              "criteria": "cpe:2.3:a:microsoft:internet_explorer:5.0:*:*:*:*:*:*:*",
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              "matchCriteriaId": "E6B8985B-B927-4928-B1DB-18E29F796992"
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          "operator": "OR"
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  "sourceIdentifier": "cve@mitre.org"
}