{
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    "dataVersion": "5.2",
    "cveMetadata": {
        "cveId": "CVE-2025-6424",
        "assignerOrgId": "f16b083a-5664-49f3-a51e-8d479e5ed7fe",
        "state": "PUBLISHED",
        "assignerShortName": "mozilla",
        "dateReserved": "2025-06-20T14:51:26.620Z",
        "datePublished": "2025-06-24T12:27:59.669Z",
        "dateUpdated": "2026-04-13T14:26:04.861Z"
    },
    "containers": {
        "cna": {
            "affected": [
                {
                    "product": "Firefox",
                    "vendor": "Mozilla",
                    "versions": [
                        {
                            "status": "unaffected",
                            "version": "115.25",
                            "lessThanOrEqual": "115.*",
                            "versionType": "rpm"
                        },
                        {
                            "status": "unaffected",
                            "version": "128.12",
                            "lessThanOrEqual": "128.*",
                            "versionType": "rpm"
                        },
                        {
                            "status": "unaffected",
                            "version": "140",
                            "lessThanOrEqual": "*",
                            "versionType": "rpm"
                        }
                    ]
                },
                {
                    "product": "Thunderbird",
                    "vendor": "Mozilla",
                    "versions": [
                        {
                            "status": "unaffected",
                            "version": "128.12",
                            "lessThanOrEqual": "128.*",
                            "versionType": "rpm"
                        },
                        {
                            "status": "unaffected",
                            "version": "140",
                            "lessThanOrEqual": "*",
                            "versionType": "rpm"
                        }
                    ]
                }
            ],
            "descriptions": [
                {
                    "lang": "en",
                    "value": "A use-after-free in FontFaceSet resulted in a potentially exploitable crash. This vulnerability was fixed in Firefox 140, Firefox ESR 115.25, Firefox ESR 128.12, Thunderbird 140, and Thunderbird 128.12.",
                    "supportingMedia": [
                        {
                            "type": "text/html",
                            "base64": false,
                            "value": "A use-after-free in FontFaceSet resulted in a potentially exploitable crash. This vulnerability was fixed in Firefox 140, Firefox ESR 115.25, Firefox ESR 128.12, Thunderbird 140, and Thunderbird 128.12."
                        }
                    ]
                }
            ],
            "title": "Use-after-free in FontFaceSet",
            "references": [
                {
                    "url": "https://bugzilla.mozilla.org/show_bug.cgi?id=1966423"
                },
                {
                    "url": "https://www.mozilla.org/security/advisories/mfsa2025-51/"
                },
                {
                    "url": "https://www.mozilla.org/security/advisories/mfsa2025-52/"
                },
                {
                    "url": "https://www.mozilla.org/security/advisories/mfsa2025-53/"
                },
                {
                    "url": "https://www.mozilla.org/security/advisories/mfsa2025-54/"
                },
                {
                    "url": "https://www.mozilla.org/security/advisories/mfsa2025-55/"
                }
            ],
            "credits": [
                {
                    "lang": "en",
                    "value": "LJP and HexRabbit (DEVCORE Research Team)"
                }
            ],
            "providerMetadata": {
                "orgId": "f16b083a-5664-49f3-a51e-8d479e5ed7fe",
                "shortName": "mozilla",
                "dateUpdated": "2026-04-13T14:26:04.861Z"
            }
        },
        "adp": [
            {
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                    {
                        "descriptions": [
                            {
                                "type": "CWE",
                                "cweId": "CWE-416",
                                "lang": "en",
                                "description": "CWE-416 Use After Free"
                            }
                        ]
                    }
                ],
                "metrics": [
                    {
                        "cvssV3_1": {
                            "scope": "UNCHANGED",
                            "version": "3.1",
                            "baseScore": 9.8,
                            "attackVector": "NETWORK",
                            "baseSeverity": "CRITICAL",
                            "vectorString": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H",
                            "integrityImpact": "HIGH",
                            "userInteraction": "NONE",
                            "attackComplexity": "LOW",
                            "availabilityImpact": "HIGH",
                            "privilegesRequired": "NONE",
                            "confidentialityImpact": "HIGH"
                        }
                    },
                    {
                        "other": {
                            "type": "ssvc",
                            "content": {
                                "timestamp": "2025-06-25T12:36:06.501007Z",
                                "id": "CVE-2025-6424",
                                "options": [
                                    {
                                        "Exploitation": "none"
                                    },
                                    {
                                        "Automatable": "yes"
                                    },
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                                        "Technical Impact": "total"
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                                "role": "CISA Coordinator",
                                "version": "2.0.3"
                            }
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                "title": "CISA ADP Vulnrichment",
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                    "shortName": "CISA-ADP",
                    "dateUpdated": "2025-06-25T12:42:03.245Z"
                }
            },
            {
                "title": "CVE Program Container",
                "references": [
                    {
                        "url": "https://lists.debian.org/debian-lts-announce/2025/07/msg00002.html"
                    },
                    {
                        "url": "https://lists.debian.org/debian-lts-announce/2025/06/msg00029.html"
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                    "dateUpdated": "2025-11-03T20:06:57.283Z"
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}