CVE-2005-2405

Status: ModifiedMedium (5)—

Opera 8.01, when the "Arial Unicode MS" font (ARIALUNI.TTF) is installed, does not properly handle extended ASCII characters in the file download dialog box, which allows remote attackers to spoof file extensions and possibly trick users into executing arbitrary code.

CVSS

Version: 2.0
Vector: AV:N/AC:L/Au:N/C:N/I:P/A:N
Base score: 5

Exploitation probability (EPSS)

Probability of exploitation in the next 30 days: 2.78%
Percentile among all scored CVEs: 86
Score date: 10/7/2026

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 (1)

Opera — Opera Browser

CWEs

CWE-20

References

Raw JSON (NVD)

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{
  "id": "CVE-2005-2405",
  "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:N/I:P/A:N",
          "authentication": "NONE",
          "integrityImpact": "PARTIAL",
          "accessComplexity": "LOW",
          "availabilityImpact": "NONE",
          "confidentialityImpact": "NONE"
        },
        "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": "2005-08-01T04:00:00.000",
  "references": [
    {
      "url": "http://secunia.com/advisories/15870",
      "tags": [
        "Broken Link",
        "Patch"
      ],
      "source": "cve@mitre.org"
    },
    {
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      "tags": [
        "Broken Link",
        "Third Party Advisory",
        "VDB Entry"
      ],
      "source": "cve@mitre.org"
    },
    {
      "url": "http://www.opera.com/linux/changelogs/802/",
      "tags": [
        "Broken Link",
        "Patch"
      ],
      "source": "cve@mitre.org"
    },
    {
      "url": "http://www.securityfocus.com/bid/14402",
      "tags": [
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        "Third Party Advisory",
        "VDB Entry"
      ],
      "source": "cve@mitre.org"
    },
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      "tags": [
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      "source": "cve@mitre.org"
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    {
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      "tags": [
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    },
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      "tags": [
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      "source": "af854a3a-2127-422b-91ae-364da2661108"
    },
    {
      "url": "https://exchange.xforce.ibmcloud.com/vulnerabilities/21784",
      "tags": [
        "Third Party Advisory",
        "VDB Entry"
      ],
      "source": "af854a3a-2127-422b-91ae-364da2661108"
    }
  ],
  "vulnStatus": "Modified",
  "weaknesses": [
    {
      "type": "Primary",
      "source": "nvd@nist.gov",
      "description": [
        {
          "lang": "en",
          "value": "CWE-20"
        }
      ]
    }
  ],
  "descriptions": [
    {
      "lang": "en",
      "value": "Opera 8.01, when the \"Arial Unicode MS\" font (ARIALUNI.TTF) is installed, does not properly handle extended ASCII characters in the file download dialog box, which allows remote attackers to spoof file extensions and possibly trick users into executing arbitrary code."
    },
    {
      "lang": "es",
      "value": "Opera 8.0.1, cuando está instalado el font Arial Unicode MS, no maneja adecuadamente los caracteres ASCII extendidos en el diálogo de descarga de ficheros, lo que permite que atacantes remotos engañen con las extensiones de ficheros y posiblemente induzcan a los usuarios a ejecutar código arbitrario."
    }
  ],
  "lastModified": "2026-06-16T22:14:49.780",
  "configurations": [
    {
      "nodes": [
        {
          "negate": false,
          "cpeMatch": [
            {
              "criteria": "cpe:2.3:a:opera:opera_browser:8.01:*:*:*:*:*:*:*",
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              "matchCriteriaId": "9DF2B21F-7E97-416B-AF5C-35338A254552"
            }
          ],
          "operator": "OR"
        }
      ]
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  ],
  "sourceIdentifier": "cve@mitre.org"
}