CVE-2026-74969
Full vulnerability record from the local CVENow database.
Description
Race condition, use-after-free in the Layout: Text and Fonts component. This vulnerability was fixed in Firefox 154, Firefox ESR 115.39, Firefox ESR 140.14, Firefox ESR 153.1, Thunderbird 154, Thunderbird 140.14, and Thunderbird 153.1.
Severity
HIGH
CVSS score
8.8
(v3.1)
Vulnerability status
Modified
Source identifier
Published
2026-08-18 13:17:34.317000
Last modified
2026-10-28 17:18:38.500000
View original CVE JSON
{
"id": "CVE-2026-74969",
"sourceIdentifier": "[email protected]",
"published": "2026-08-18T13:17:34.317",
"lastModified": "2026-10-28T17:18:38.500",
"vulnStatus": "Modified",
"cveTags": [],
"descriptions": [
{
"lang": "en",
"value": "Race condition, use-after-free in the Layout: Text and Fonts component. This vulnerability was fixed in Firefox 154, Firefox ESR 115.39, Firefox ESR 140.14, Firefox ESR 153.1, Thunderbird 154, Thunderbird 140.14, and Thunderbird 153.1."
}
],
"affected": [
{
"source": "[email protected]",
"affectedData": [
{
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"product": "Firefox",
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"versionType": "rpm",
"status": "unaffected"
},
{
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},
{
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"versionType": "rpm",
"status": "unaffected"
},
{
"version": "154",
"lessThanOrEqual": "*",
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}
]
},
{
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},
{
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},
{
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}
]
}
]
}
],
"metrics": {
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{
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"vectorString": "CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H",
"baseScore": 8.8,
"baseSeverity": "HIGH",
"attackVector": "NETWORK",
"attackComplexity": "LOW",
"privilegesRequired": "NONE",
"userInteraction": "REQUIRED",
"scope": "UNCHANGED",
"confidentialityImpact": "HIGH",
"integrityImpact": "HIGH",
"availabilityImpact": "HIGH"
},
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],
"ssvcV203": [
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"id": "CVE-2026-74969",
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},
{
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}
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"description": [
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"value": "CWE-416"
}
]
}
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"configurations": [
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"references": [
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"url": "https://bugzilla.mozilla.org/show_bug.cgi?id=2056065",
"source": "[email protected]",
"tags": [
"Permissions Required"
]
},
{
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}