CVE-2003-0513

Status: ModifiedHigh (7.5)—

Microsoft Internet Explorer allows remote attackers to bypass intended cookie access restrictions on a web application via "%2e%2e" (encoded dot dot) directory traversal sequences in a URL, which causes Internet Explorer to send the cookie outside the specified URL subsets, e.g. to a vulnerable application that runs on the same server as the target application.

CVSS

Version: 2.0
Vector: AV:N/AC:L/Au:N/C:P/I:P/A:P
Base score: 7.5

Exploitation probability (EPSS)

Probability of exploitation in the next 30 days: 9.77%
Percentile among all scored CVEs: 95
Score date: 10/9/2026

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 — IE Microsoft — Internet Explorer

CWEs

NVD-CWE-Other

References

Raw JSON (NVD)

Show

{
  "id": "CVE-2003-0513",
  "cveTags": [],
  "metrics": {
    "cvssMetricV2": [
      {
        "type": "Primary",
        "source": "nvd@nist.gov",
        "cvssData": {
          "version": "2.0",
          "baseScore": 7.5,
          "accessVector": "NETWORK",
          "vectorString": "AV:N/AC:L/Au:N/C:P/I:P/A:P",
          "authentication": "NONE",
          "integrityImpact": "PARTIAL",
          "accessComplexity": "LOW",
          "availabilityImpact": "PARTIAL",
          "confidentialityImpact": "PARTIAL"
        },
        "acInsufInfo": false,
        "impactScore": 6.4,
        "baseSeverity": "HIGH",
        "obtainAllPrivilege": false,
        "exploitabilityScore": 10,
        "obtainUserPrivilege": false,
        "obtainOtherPrivilege": true,
        "userInteractionRequired": false
      }
    ]
  },
  "affected": [
    {
      "source": "cve@mitre.org",
      "affectedData": [
        {
          "vendor": "n/a",
          "product": "n/a",
          "versions": [
            {
              "status": "affected",
              "version": "n/a"
            }
          ]
        }
      ]
    }
  ],
  "published": "2004-04-15T04:00:00.000",
  "references": [
    {
      "url": "http://archives.neohapsis.com/archives/vulnwatch/2004-q1/0056.html",
      "tags": [
        "Exploit",
        "Vendor Advisory"
      ],
      "source": "cve@mitre.org"
    },
    {
      "url": "http://lists.grok.org.uk/pipermail/full-disclosure/2004-March/018475.html",
      "source": "cve@mitre.org"
    },
    {
      "url": "http://archives.neohapsis.com/archives/vulnwatch/2004-q1/0056.html",
      "tags": [
        "Exploit",
        "Vendor Advisory"
      ],
      "source": "af854a3a-2127-422b-91ae-364da2661108"
    },
    {
      "url": "http://lists.grok.org.uk/pipermail/full-disclosure/2004-March/018475.html",
      "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": "Microsoft Internet Explorer allows remote attackers to bypass intended cookie access restrictions on a web application via \"%2e%2e\" (encoded dot dot) directory traversal sequences in a URL, which causes Internet Explorer to send the cookie outside the specified URL subsets, e.g. to a vulnerable application that runs on the same server as the target application."
    },
    {
      "lang": "es",
      "value": "Microsoft Internet Explorer permite a atacantes remotos saltarse las restriciones de cookies pretendidas en una aplicación web mediante secuencias de atravesamiento de directorios \"%2e%2e\" (punto punto codificado) en una URL, lo que hace que Internet Explorer envíe la cookie fuera de los subconjuntos de URL especificados, por ejemplo a una aplicación vulnerable que corre en el mismo servidor que la aplicación objetivo."
    }
  ],
  "lastModified": "2026-06-16T22:02:20.753",
  "configurations": [
    {
      "nodes": [
        {
          "negate": false,
          "cpeMatch": [
            {
              "criteria": "cpe:2.3:a:microsoft:ie:6.0:sp1:*:*:*:*:*:*",
              "vulnerable": true,
              "matchCriteriaId": "24DF2AB3-DEAB-4D70-986E-FFBB7E64B96A"
            },
            {
              "criteria": "cpe:2.3:a:microsoft:internet_explorer:5.0.1:*:*:*:*:*:*:*",
              "vulnerable": true,
              "matchCriteriaId": "3A04FEA6-37B0-44B0-844F-55652ABA1F85"
            },
            {
              "criteria": "cpe:2.3:a:microsoft:internet_explorer:5.0.1:sp1:*:*:*:*:*:*",
              "vulnerable": true,
              "matchCriteriaId": "4D56FB8E-2553-47C1-82A2-9E59023780CE"
            },
            {
              "criteria": "cpe:2.3:a:microsoft:internet_explorer:5.0.1:sp2:*:*:*:*:*:*",
              "vulnerable": true,
              "matchCriteriaId": "8541EEED-94F4-42F8-9719-57F3EC85D52B"
            },
            {
              "criteria": "cpe:2.3:a:microsoft:internet_explorer:5.0.1:sp3:*:*:*:*:*:*",
              "vulnerable": true,
              "matchCriteriaId": "40372520-08CF-4F64-A7AC-7E0AE0964138"
            },
            {
              "criteria": "cpe:2.3:a:microsoft:internet_explorer:5.0.1:sp4:*:*:*:*:*:*",
              "vulnerable": true,
              "matchCriteriaId": "2EB39B99-91A0-4B70-B12A-BA37F6AFBA83"
            },
            {
              "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:5.5:sp1:*:*:*:*:*:*",
              "vulnerable": true,
              "matchCriteriaId": "2CD04E07-3664-4D4F-BF3E-6B33AF0F2D12"
            },
            {
              "criteria": "cpe:2.3:a:microsoft:internet_explorer:5.5:sp2:*:*:*:*:*:*",
              "vulnerable": true,
              "matchCriteriaId": "D05ED9D0-CF78-4FAD-9371-6FB3D5825148"
            },
            {
              "criteria": "cpe:2.3:a:microsoft:internet_explorer:6.0:*:*:*:*:*:*:*",
              "vulnerable": true,
              "matchCriteriaId": "A19F6133-25D1-44A5-B6B9-354703436783"
            }
          ],
          "operator": "OR"
        }
      ]
    }
  ],
  "sourceIdentifier": "cve@mitre.org"
}