CVE-2005-0147

Status: ModifiedHigh (7.5)—

Firefox before 1.0 and Mozilla before 1.7.5, when configured to use a proxy, respond to 407 proxy auth requests from arbitrary servers, which allows remote attackers to steal NTLM or SPNEGO credentials.

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: 1.41%
Percentile among all scored CVEs: 72
Score date: 10/14/2026

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)

Mozilla — Firefox Mozilla — Mozilla

CWEs

NVD-CWE-Other

References

Raw JSON (NVD)

Show

{
  "id": "CVE-2005-0147",
  "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": "2005-05-02T04:00:00.000",
  "references": [
    {
      "url": "http://www.mozilla.org/security/announce/mfsa2005-09.html",
      "tags": [
        "Vendor Advisory"
      ],
      "source": "cve@mitre.org"
    },
    {
      "url": "http://www.redhat.com/support/errata/RHSA-2005-323.html",
      "tags": [
        "Patch",
        "Vendor Advisory"
      ],
      "source": "cve@mitre.org"
    },
    {
      "url": "http://www.securityfocus.com/bid/12407",
      "source": "cve@mitre.org"
    },
    {
      "url": "https://bugzilla.mozilla.org/show_bug.cgi?id=267263",
      "tags": [
        "Vendor Advisory"
      ],
      "source": "cve@mitre.org"
    },
    {
      "url": "https://exchange.xforce.ibmcloud.com/vulnerabilities/19174",
      "source": "cve@mitre.org"
    },
    {
      "url": "https://oval.cisecurity.org/repository/search/definition/oval%3Aorg.mitre.oval%3Adef%3A100049",
      "source": "cve@mitre.org"
    },
    {
      "url": "https://oval.cisecurity.org/repository/search/definition/oval%3Aorg.mitre.oval%3Adef%3A9578",
      "source": "cve@mitre.org"
    },
    {
      "url": "http://www.mozilla.org/security/announce/mfsa2005-09.html",
      "tags": [
        "Vendor Advisory"
      ],
      "source": "af854a3a-2127-422b-91ae-364da2661108"
    },
    {
      "url": "http://www.redhat.com/support/errata/RHSA-2005-323.html",
      "tags": [
        "Patch",
        "Vendor Advisory"
      ],
      "source": "af854a3a-2127-422b-91ae-364da2661108"
    },
    {
      "url": "http://www.securityfocus.com/bid/12407",
      "source": "af854a3a-2127-422b-91ae-364da2661108"
    },
    {
      "url": "https://bugzilla.mozilla.org/show_bug.cgi?id=267263",
      "tags": [
        "Vendor Advisory"
      ],
      "source": "af854a3a-2127-422b-91ae-364da2661108"
    },
    {
      "url": "https://exchange.xforce.ibmcloud.com/vulnerabilities/19174",
      "source": "af854a3a-2127-422b-91ae-364da2661108"
    },
    {
      "url": "https://oval.cisecurity.org/repository/search/definition/oval%3Aorg.mitre.oval%3Adef%3A100049",
      "source": "af854a3a-2127-422b-91ae-364da2661108"
    },
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      "url": "https://oval.cisecurity.org/repository/search/definition/oval%3Aorg.mitre.oval%3Adef%3A9578",
      "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": "Firefox before 1.0 and Mozilla before 1.7.5, when configured to use a proxy, respond to 407 proxy auth requests from arbitrary servers, which allows remote attackers to steal NTLM or SPNEGO credentials."
    }
  ],
  "lastModified": "2026-06-16T22:10:35.730",
  "configurations": [
    {
      "nodes": [
        {
          "negate": false,
          "cpeMatch": [
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            },
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              "vulnerable": true,
              "matchCriteriaId": "2434FCE7-A50B-4527-9970-C7224B31141C"
            },
            {
              "criteria": "cpe:2.3:a:mozilla:firefox:0.9.1:*:*:*:*:*:*:*",
              "vulnerable": true,
              "matchCriteriaId": "429ECA02-DBCD-45FB-942C-CA4BC1BC8A72"
            },
            {
              "criteria": "cpe:2.3:a:mozilla:firefox:0.9.2:*:*:*:*:*:*:*",
              "vulnerable": true,
              "matchCriteriaId": "B5F0DC80-5473-465C-9D7F-9589F1B78E12"
            },
            {
              "criteria": "cpe:2.3:a:mozilla:firefox:0.9.3:*:*:*:*:*:*:*",
              "vulnerable": true,
              "matchCriteriaId": "567FF916-7DE0-403C-8528-7931A43E0D18"
            },
            {
              "criteria": "cpe:2.3:a:mozilla:mozilla:1.7:*:*:*:*:*:*:*",
              "vulnerable": true,
              "matchCriteriaId": "FCEAEDEB-0EE7-4221-B9B8-65438580D331"
            },
            {
              "criteria": "cpe:2.3:a:mozilla:mozilla:1.7:rc3:*:*:*:*:*:*",
              "vulnerable": true,
              "matchCriteriaId": "150F1B28-0FAB-4880-B1D5-7F244A1C4D31"
            },
            {
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              "vulnerable": true,
              "matchCriteriaId": "2FE7EA3B-3BF8-4696-9488-78506074D62D"
            },
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              "matchCriteriaId": "CCFD7AF7-0FE9-4F56-98B0-60FC7F7F1B78"
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              "vulnerable": true,
              "matchCriteriaId": "C883B45F-D28D-428E-AAF7-F93522A229DC"
            }
          ],
          "operator": "OR"
        }
      ]
    }
  ],
  "sourceIdentifier": "cve@mitre.org"
}