FKIE_CVE-2025-0240

Vulnerability from fkie_nvd - Published: 2025-01-07 16:15 - Updated: 2026-10-05 15:10
Severity
4.0 (Medium) - CVSS:3.1/AV:L/AC:L/PR:N/UI:N/S:U/C:N/I:L/A:N
Summary
Parsing a JavaScript module as JSON could, under some circumstances, cause cross-compartment access, which may result in a use-after-free. This vulnerability was fixed in Firefox 134, Firefox ESR 128.6, Thunderbird 134, and Thunderbird 128.6.
References
security@mozilla.orghttps://bugzilla.mozilla.org/show_bug.cgi?id=1929623Issue Tracking, Permissions Required
security@mozilla.orghttps://www.mozilla.org/security/advisories/mfsa2025-01/Vendor Advisory
security@mozilla.orghttps://www.mozilla.org/security/advisories/mfsa2025-02/Vendor Advisory
security@mozilla.orghttps://www.mozilla.org/security/advisories/mfsa2025-04/Vendor Advisory
security@mozilla.orghttps://www.mozilla.org/security/advisories/mfsa2025-05/Vendor Advisory
af854a3a-2127-422b-91ae-364da2661108https://lists.debian.org/debian-lts-announce/2025/01/msg00004.html
Impacted products
Vendor Product Version
mozilla firefox *
mozilla firefox *
mozilla thunderbird *
mozilla thunderbird *
To clipboard 

{
  "affected": [
    {
      "affectedData": [
        {
          "product": "Firefox",
          "vendor": "Mozilla",
          "versions": [
            {
              "lessThanOrEqual": "128.*",
              "status": "unaffected",
              "version": "128.6",
              "versionType": "rpm"
            },
            {
              "lessThanOrEqual": "*",
              "status": "unaffected",
              "version": "134",
              "versionType": "rpm"
            }
          ]
        },
        {
          "product": "Thunderbird",
          "vendor": "Mozilla",
          "versions": [
            {
              "lessThanOrEqual": "128.*",
              "status": "unaffected",
              "version": "128.6",
              "versionType": "rpm"
            },
            {
              "lessThanOrEqual": "*",
              "status": "unaffected",
              "version": "134",
              "versionType": "rpm"
            }
          ]
        }
      ],
      "source": "security@mozilla.org"
    }
  ],
  "configurations": [
    {
      "nodes": [
        {
          "cpeMatch": [
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              "criteria": "cpe:2.3:a:mozilla:firefox:*:*:*:*:esr:*:*:*",
              "matchCriteriaId": "AEBB7F43-496D-4A67-8E9E-EEE29913B6DE",
              "versionEndExcluding": "128.6.0",
              "vulnerable": true
            },
            {
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              "matchCriteriaId": "4FDCA935-A68D-404E-A749-CA3845C709F0",
              "versionEndExcluding": "134.0",
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              "versionEndExcluding": "134.0",
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            }
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          "negate": false,
          "operator": "OR"
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  ],
  "cveTags": [],
  "descriptions": [
    {
      "lang": "en",
      "value": "Parsing a JavaScript module as JSON could, under some circumstances, cause cross-compartment access, which may result in a use-after-free. This vulnerability was fixed in Firefox 134, Firefox ESR 128.6, Thunderbird 134, and Thunderbird 128.6."
    },
    {
      "lang": "es",
      "value": "Analizar un m\u00f3dulo de JavaScript como JSON podr\u00eda, en algunas circunstancias, provocar un acceso entre compartimentos, lo que puede dar lugar a use-after-free. Esta vulnerabilidad afecta a Firefox menor que 134 y Firefox ESR menor que 128.6."
    }
  ],
  "id": "CVE-2025-0240",
  "lastModified": "2026-10-05T15:10:00.590",
  "metrics": {
    "cvssMetricV31": [
      {
        "cvssData": {
          "attackComplexity": "LOW",
          "attackVector": "LOCAL",
          "availabilityImpact": "NONE",
          "baseScore": 4.0,
          "baseSeverity": "MEDIUM",
          "confidentialityImpact": "NONE",
          "integrityImpact": "LOW",
          "privilegesRequired": "NONE",
          "scope": "UNCHANGED",
          "userInteraction": "NONE",
          "vectorString": "CVSS:3.1/AV:L/AC:L/PR:N/UI:N/S:U/C:N/I:L/A:N",
          "version": "3.1"
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        "impactScore": 1.4,
        "source": "134c704f-9b21-4f2e-91b3-4a467353bcc0",
        "type": "Secondary"
      }
    ],
    "ssvcV203": [
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        "ssvcData": {
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          "options": [
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            {
              "technicalImpact": "partial"
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          ],
          "role": "CISA Coordinator",
          "timestamp": "2025-01-08T16:36:55.988099Z",
          "version": "2.0.3"
        }
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  },
  "published": "2025-01-07T16:15:38.663",
  "references": [
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      "source": "security@mozilla.org",
      "tags": [
        "Issue Tracking",
        "Permissions Required"
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      "url": "https://bugzilla.mozilla.org/show_bug.cgi?id=1929623"
    },
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      "source": "security@mozilla.org",
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    },
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    },
    {
      "source": "af854a3a-2127-422b-91ae-364da2661108",
      "url": "https://lists.debian.org/debian-lts-announce/2025/01/msg00004.html"
    }
  ],
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  "vulnStatus": "Modified",
  "weaknesses": [
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          "lang": "en",
          "value": "CWE-416"
        }
      ],
      "source": "134c704f-9b21-4f2e-91b3-4a467353bcc0",
      "type": "Secondary"
    }
  ]
}



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