Memory safety bugs fixed in Firefox 147 and Thunderbird 147_CVE-2026-0892

{
    "lastseen": "",
    "description": "Memory safety bugs present in Firefox 146 and Thunderbird 146. Some of these bugs showed evidence of memory corruption and we presume that with enough effort some of these could have been exploited to run arbitrary code. This vulnerability affects Firefox < 147.",
    "published": "2026-01-13T13:30:59.874Z",
    "modified": "2026-01-13T14:26:03.378Z",
    "type": "cve",
    "title": "Memory safety bugs fixed in Firefox 147 and Thunderbird 147",
    "source": "mozilla",
    "references": "https://bugzilla.mozilla.org/buglist.cgi?bug_id=1986912%2C1996718%2C1999633%2C2001081%2C2004443\nhttps://www.mozilla.org/security/advisories/mfsa2026-01/",
    "id": "CVE-2026-0892",
    "bulletinFamily": "",
    "cwe": [
        "CWE-119"
    ],
    "cvelist": null,
    "sourceData": "Mozilla Firefox unspecified",
    "sourceHref": "",
    "cvss": {
        "score": 9.8,
        "severity": "CRITICAL",
        "vector": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H",
        "version": "3.1"
    },
    "cvss2": [],
    "cvss3": {
        "version": "",
        "vectorString": "",
        "baseScore": 0,
        "baseSeverity": "",
        "attackVector": "",
        "attackComplexity": "",
        "privilegesRequired": "",
        "userInteraction": "",
        "scope": "",
        "confidentialityImpact": "",
        "integrityImpact": "",
        "availabilityImpact": "",
        "cvssV3": {
            "version": "",
            "vectorString": "",
            "baseScore": 0,
            "baseSeverity": "",
            "attackVector": "",
            "attackComplexity": "",
            "privilegesRequired": "",
            "userInteraction": "",
            "scope": "",
            "confidentialityImpact": "",
            "integrityImpact": "",
            "availabilityImpact": ""
        }
    },
    "href": "",
    "category_name": "CVE",
    "post_link": "",
    "product": "Firefox",
    "version": "unspecified",
    "vendor": "Mozilla",
    "ai_description": "Memory safety bugs in Firefox that could allow arbitrary code execution",
    "ai_severity": "Critical",
    "ai_vendor": "Mozilla",
    "ai_product": "Firefox",
    "ai_version": "< 147",
    "ai_score": 9.8
}