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CVE-2003-1559

Status: ModifiedMedium (5)—

Microsoft Internet Explorer 5.22, and other 5 through 6 SP1 versions, sends Referer headers containing https:// URLs in requests for http:// URLs, which allows remote attackers to obtain potentially sensitive information by reading Referer log data.

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 (2)

Microsoft — IEMicrosoft — Internet Explorer

CWEs

References

Raw JSON (NVD)

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{
  "id": "CVE-2003-1559",
  "cveTags": [],
  "metrics": {
    "cvssMetricV2": [
      {
        "type": "Primary",
        "source": "nvd@nist.gov",
        "cvssData": {
          "version": "2.0",
          "baseScore": 5,
          "accessVector": "NETWORK",
          "vectorString": "AV:N/AC:L/Au:N/C:P/I:N/A:N",
          "authentication": "NONE",
          "integrityImpact": "NONE",
          "accessComplexity": "LOW",
          "availabilityImpact": "NONE",
          "confidentialityImpact": "PARTIAL"
        },
        "acInsufInfo": false,
        "impactScore": 2.9,
        "baseSeverity": "MEDIUM",
        "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": "2003-12-31T05:00:00.000",
  "references": [
    {
      "url": "http://securityreason.com/securityalert/3989",
      "source": "cve@mitre.org"
    },
    {
      "url": "http://www.gadgetopia.com/2003/12/23/OutlookWebAccessPrivacyHole.html",
      "source": "cve@mitre.org"
    },
    {
      "url": "http://www.securityfocus.com/archive/1/348360",
      "source": "cve@mitre.org"
    },
    {
      "url": "http://www.securityfocus.com/archive/1/348574",
      "source": "cve@mitre.org"
    },
    {
      "url": "http://www.securityfocus.com/bid/9295",
      "source": "cve@mitre.org"
    },
    {
      "url": "http://securityreason.com/securityalert/3989",
      "source": "af854a3a-2127-422b-91ae-364da2661108"
    },
    {
      "url": "http://www.gadgetopia.com/2003/12/23/OutlookWebAccessPrivacyHole.html",
      "source": "af854a3a-2127-422b-91ae-364da2661108"
    },
    {
      "url": "http://www.securityfocus.com/archive/1/348360",
      "source": "af854a3a-2127-422b-91ae-364da2661108"
    },
    {
      "url": "http://www.securityfocus.com/archive/1/348574",
      "source": "af854a3a-2127-422b-91ae-364da2661108"
    },
    {
      "url": "http://www.securityfocus.com/bid/9295",
      "source": "af854a3a-2127-422b-91ae-364da2661108"
    }
  ],
  "vulnStatus": "Modified",
  "weaknesses": [
    {
      "type": "Primary",
      "source": "nvd@nist.gov",
      "description": [
        {
          "lang": "en",
          "value": "CWE-200"
        }
      ]
    }
  ],
  "descriptions": [
    {
      "lang": "en",
      "value": "Microsoft Internet Explorer 5.22, and other 5 through 6 SP1 versions, sends Referer headers containing https:// URLs in requests for http:// URLs, which allows remote attackers to obtain potentially sensitive information by reading Referer log data."
    }
  ],
  "lastModified": "2026-06-16T22:04:39.390",
  "configurations": [
    {
      "nodes": [
        {
          "negate": false,
          "cpeMatch": [
            {
              "criteria": "cpe:2.3:a:microsoft:ie:5.22:*:*:*:*:*:*:*",
              "vulnerable": true,
              "matchCriteriaId": "226A1B77-A80E-4ADE-8318-749CD1AD7CD0"
            },
            {
              "criteria": "cpe:2.3:a:microsoft:internet_explorer:5.5:*:*:*:*:*:*:*",
              "vulnerable": true,
              "matchCriteriaId": "40F8042F-C621-45AE-9F8C-70469579643A"
            },
            {
              "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:6:sp1:*:*:*:*:*:*",
              "vulnerable": true,
              "matchCriteriaId": "D47247A3-7CD7-4D67-9D9B-A94A504DA1BE"
            }
          ],
          "operator": "OR"
        }
      ]
    }
  ],
  "evaluatorImpact": "The only versions confirmed with this vulnerability are the ones listed in the CPE entry.  Other IE Versions may, and probably are, affected but have not been confirmed yet.",
  "sourceIdentifier": "cve@mitre.org"
}