FKIE_CVE-2025-4085

Vulnerability from fkie_nvd - Published: 2025-04-29 14:15 - Updated: 2026-04-13 15:16
Severity ?
7.1 (High) - CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:L/A:N
Summary
An attacker with control over a content process could potentially leverage the privileged UITour actor to leak sensitive information or escalate privileges. This vulnerability was fixed in Firefox 138 and Thunderbird 138.
References
security@mozilla.orghttps://bugzilla.mozilla.org/show_bug.cgi?id=1915280Permissions 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",
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          "operator": "OR"
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  "cveTags": [],
  "descriptions": [
    {
      "lang": "en",
      "value": "An attacker with control over a content process could potentially leverage the privileged UITour actor to leak sensitive information or escalate privileges. This vulnerability was fixed in Firefox 138 and Thunderbird 138."
    },
    {
      "lang": "es",
      "value": "Un atacante con control sobre un proceso de contenido podr\u00eda aprovechar el actor privilegiado UITour para filtrar informaci\u00f3n confidencial o escalar privilegios. Esta vulnerabilidad afecta a Firefox (versi\u00f3n anterior a la 138) y Thunderbird (versi\u00f3n anterior a la 138)."
    }
  ],
  "id": "CVE-2025-4085",
  "lastModified": "2026-04-13T15:16:59.873",
  "metrics": {
    "cvssMetricV31": [
      {
        "cvssData": {
          "attackComplexity": "LOW",
          "attackVector": "NETWORK",
          "availabilityImpact": "NONE",
          "baseScore": 7.1,
          "baseSeverity": "HIGH",
          "confidentialityImpact": "HIGH",
          "integrityImpact": "LOW",
          "privilegesRequired": "LOW",
          "scope": "UNCHANGED",
          "userInteraction": "NONE",
          "vectorString": "CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:L/A:N",
          "version": "3.1"
        },
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        "impactScore": 4.2,
        "source": "134c704f-9b21-4f2e-91b3-4a467353bcc0",
        "type": "Secondary"
      }
    ]
  },
  "published": "2025-04-29T14:15:35.187",
  "references": [
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      "tags": [
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      "tags": [
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      "url": "https://www.mozilla.org/security/advisories/mfsa2025-31/"
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  "sourceIdentifier": "security@mozilla.org",
  "vulnStatus": "Modified",
  "weaknesses": [
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      "description": [
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          "lang": "en",
          "value": "CWE-269"
        }
      ],
      "source": "134c704f-9b21-4f2e-91b3-4a467353bcc0",
      "type": "Secondary"
    }
  ]
}


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Forecast uses a logistic model when the trend is rising, or an exponential decay model when the trend is falling. Fitted via linearized least squares.

Sightings

Author Source Type Date Other

Nomenclature

  • 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.
  • Not exploited: The vulnerability was not observed as exploited by the user who reported the sighting.
  • 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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