FKIE_CVE-2025-4086

Vulnerability from fkie_nvd - Published: 2025-04-29 14:15 - Updated: 2025-05-09 19:33
Severity ?
6.5 (Medium) - CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:L/A:N
Summary
A specially crafted filename containing a large number of encoded newline characters could obscure the file's extension when displayed in the download dialog. *This bug only affects Thunderbird for Android. Other versions of Thunderbird are unaffected.* This vulnerability affects Firefox < 138 and Thunderbird < 138.
References
security@mozilla.orghttps://bugzilla.mozilla.org/show_bug.cgi?id=1945705Permissions Required
security@mozilla.orghttps://www.mozilla.org/security/advisories/mfsa2025-28/Vendor Advisory
security@mozilla.orghttps://www.mozilla.org/security/advisories/mfsa2025-31/Vendor Advisory
Impacted products
Vendor Product Version
mozilla firefox *
mozilla thunderbird *
To clipboard 

{
  "configurations": [
    {
      "nodes": [
        {
          "cpeMatch": [
            {
              "criteria": "cpe:2.3:a:mozilla:firefox:*:*:*:*:-:*:*:*",
              "matchCriteriaId": "EB8A8C7B-B65D-4DF5-BDB5-0C3C4E2DB72C",
              "versionEndExcluding": "138.0",
              "vulnerable": true
            },
            {
              "criteria": "cpe:2.3:a:mozilla:thunderbird:*:*:*:*:-:*:*:*",
              "matchCriteriaId": "D1E8CCF1-4E91-44CC-A652-B23D1337A485",
              "versionEndExcluding": "138.0",
              "vulnerable": true
            }
          ],
          "negate": false,
          "operator": "OR"
        }
      ]
    }
  ],
  "cveTags": [],
  "descriptions": [
    {
      "lang": "en",
      "value": "A specially crafted filename containing a large number of encoded newline characters could obscure the file\u0027s extension when displayed in the download dialog.\n*This bug only affects Thunderbird for Android. Other versions of Thunderbird are unaffected.* This vulnerability affects Firefox \u003c 138 and Thunderbird \u003c 138."
    },
    {
      "lang": "es",
      "value": "Un nombre de archivo especialmente manipulado que contiene una gran cantidad de caracteres de nueva l\u00ednea codificados podr\u00eda ocultar la extensi\u00f3n del archivo al mostrarse en el cuadro de di\u00e1logo de descarga. *Este error solo afecta a Firefox para Android. Las dem\u00e1s versiones de Firefox no se ven afectadas.* Esta vulnerabilidad afecta a Firefox (versi\u00f3n anterior a la 138) y Thunderbird (versi\u00f3n anterior a la 138)."
    }
  ],
  "id": "CVE-2025-4086",
  "lastModified": "2025-05-09T19:33:18.087",
  "metrics": {
    "cvssMetricV31": [
      {
        "cvssData": {
          "attackComplexity": "LOW",
          "attackVector": "NETWORK",
          "availabilityImpact": "NONE",
          "baseScore": 6.5,
          "baseSeverity": "MEDIUM",
          "confidentialityImpact": "LOW",
          "integrityImpact": "LOW",
          "privilegesRequired": "NONE",
          "scope": "UNCHANGED",
          "userInteraction": "NONE",
          "vectorString": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:L/A:N",
          "version": "3.1"
        },
        "exploitabilityScore": 3.9,
        "impactScore": 2.5,
        "source": "134c704f-9b21-4f2e-91b3-4a467353bcc0",
        "type": "Secondary"
      }
    ]
  },
  "published": "2025-04-29T14:15:35.267",
  "references": [
    {
      "source": "security@mozilla.org",
      "tags": [
        "Permissions Required"
      ],
      "url": "https://bugzilla.mozilla.org/show_bug.cgi?id=1945705"
    },
    {
      "source": "security@mozilla.org",
      "tags": [
        "Vendor Advisory"
      ],
      "url": "https://www.mozilla.org/security/advisories/mfsa2025-28/"
    },
    {
      "source": "security@mozilla.org",
      "tags": [
        "Vendor Advisory"
      ],
      "url": "https://www.mozilla.org/security/advisories/mfsa2025-31/"
    }
  ],
  "sourceIdentifier": "security@mozilla.org",
  "vulnStatus": "Analyzed",
  "weaknesses": [
    {
      "description": [
        {
          "lang": "en",
          "value": "CWE-451"
        }
      ],
      "source": "134c704f-9b21-4f2e-91b3-4a467353bcc0",
      "type": "Secondary"
    }
  ]
}


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  • Seen: The vulnerability was mentioned, discussed, or observed by the user.
  • Confirmed: The vulnerability has been validated from an analyst's perspective.
  • Published Proof of Concept: A public proof of concept is available for this vulnerability.
  • Exploited: The vulnerability was observed as exploited by the user who reported the sighting.
  • Patched: The vulnerability was observed as successfully patched by the user who reported the sighting.
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  • Not confirmed: The user expressed doubt about the validity of the vulnerability.
  • Not patched: The vulnerability was not observed as successfully patched by the user who reported the sighting.



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