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CVE-2001-1497

Status: ModifiedLow (2.1)—

Microsoft Internet Explorer 4.0 through 6.0 could allow local users to differentiate between alphanumeric and non-alphanumeric characters used in a password by pressing certain control keys that jump between non-alphanumeric characters, which makes it easier to conduct a brute-force password guessing attack.

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-2001-1497",
  "cveTags": [],
  "metrics": {
    "cvssMetricV2": [
      {
        "type": "Primary",
        "source": "nvd@nist.gov",
        "cvssData": {
          "version": "2.0",
          "baseScore": 2.1,
          "accessVector": "LOCAL",
          "vectorString": "AV:L/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": "LOW",
        "obtainAllPrivilege": false,
        "exploitabilityScore": 3.9,
        "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": "2001-12-31T05:00:00.000",
  "references": [
    {
      "url": "http://www.iss.net/security_center/static/7592.php",
      "source": "cve@mitre.org"
    },
    {
      "url": "http://www.securityfocus.com/archive/1/241323",
      "source": "cve@mitre.org"
    },
    {
      "url": "http://www.securityfocus.com/archive/1/241400",
      "source": "cve@mitre.org"
    },
    {
      "url": "http://www.securityfocus.com/bid/3563",
      "source": "cve@mitre.org"
    },
    {
      "url": "http://www.iss.net/security_center/static/7592.php",
      "source": "af854a3a-2127-422b-91ae-364da2661108"
    },
    {
      "url": "http://www.securityfocus.com/archive/1/241323",
      "source": "af854a3a-2127-422b-91ae-364da2661108"
    },
    {
      "url": "http://www.securityfocus.com/archive/1/241400",
      "source": "af854a3a-2127-422b-91ae-364da2661108"
    },
    {
      "url": "http://www.securityfocus.com/bid/3563",
      "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 4.0 through 6.0 could allow local users to differentiate between alphanumeric and non-alphanumeric characters used in a password by pressing certain control keys that jump between non-alphanumeric characters, which makes it easier to conduct a brute-force password guessing attack."
    }
  ],
  "lastModified": "2026-06-16T21:56:22.990",
  "configurations": [
    {
      "nodes": [
        {
          "negate": false,
          "cpeMatch": [
            {
              "criteria": "cpe:2.3:a:microsoft:ie:4.0:*:windows_nt:*:*:*:*:*",
              "vulnerable": true,
              "matchCriteriaId": "077B638C-F14D-4048-86C8-B62517C5182F"
            },
            {
              "criteria": "cpe:2.3:a:microsoft:ie:4.0.1:*:windows_98:*:*:*:*:*",
              "vulnerable": true,
              "matchCriteriaId": "ACC3A8B3-4E8C-46BD-965C-4EF655B9018D"
            },
            {
              "criteria": "cpe:2.3:a:microsoft:ie:4.0.1:*:windows_nt:*:*:*:*:*",
              "vulnerable": true,
              "matchCriteriaId": "F7739338-DAE1-403F-B22C-2CFAC884E09A"
            },
            {
              "criteria": "cpe:2.3:a:microsoft:ie:4.1:*:windows_95:*:*:*:*:*",
              "vulnerable": true,
              "matchCriteriaId": "D45C47A8-8B5F-4A49-8B36-FCBA09029375"
            },
            {
              "criteria": "cpe:2.3:a:microsoft:ie:4.1:*:windows_98:*:*:*:*:*",
              "vulnerable": true,
              "matchCriteriaId": "0CFF1B46-BEDD-4D96-90EA-EE4376AFCAF8"
            },
            {
              "criteria": "cpe:2.3:a:microsoft:ie:4.1:*:windows_nt_4.0:*:*:*:*:*",
              "vulnerable": true,
              "matchCriteriaId": "84730D4D-7887-4A64-8C76-F50C85309FE7"
            },
            {
              "criteria": "cpe:2.3:a:microsoft:internet_explorer:4.0:*:*:*:*:*:*:*",
              "vulnerable": true,
              "matchCriteriaId": "A5B815D9-BC21-4A17-AF00-B8AD181027D7"
            },
            {
              "criteria": "cpe:2.3:a:microsoft:internet_explorer:4.0.1:*:*:*:*:*:*:*",
              "vulnerable": true,
              "matchCriteriaId": "42502347-DD40-4F8C-9861-C0A88A3F8608"
            },
            {
              "criteria": "cpe:2.3:a:microsoft:internet_explorer:4.0.1:sp2:*:*:*:*:*:*",
              "vulnerable": true,
              "matchCriteriaId": "C375A9AA-505B-444C-A45F-2BAAD0B2CD0D"
            },
            {
              "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"
}