CVE-2026-100797
Full vulnerability record from the local CVENow database.
Description
Privilege escalation due to use-after-free in the Graphics: WebRender component. This vulnerability was fixed in Firefox ESR 153.4, Thunderbird 157, Thunderbird 140.17, Thunderbird 153.4, Firefox 157, Firefox ESR 115.42, and Firefox ESR 140.17.
Severity
HIGH
CVSS score
8.8
(v3.1)
Vulnerability status
Analyzed
Source identifier
Published
2026-09-29 13:17:44.760000
Last modified
2026-10-19 15:22:31.947000
View original CVE JSON
{
"id": "CVE-2026-100797",
"sourceIdentifier": "[email protected]",
"published": "2026-09-29T13:17:44.760",
"lastModified": "2026-10-19T15:22:31.947",
"vulnStatus": "Analyzed",
"cveTags": [],
"descriptions": [
{
"lang": "en",
"value": "Privilege escalation due to use-after-free in the Graphics: WebRender component. This vulnerability was fixed in Firefox ESR 153.4, Thunderbird 157, Thunderbird 140.17, Thunderbird 153.4, Firefox 157, Firefox ESR 115.42, and Firefox ESR 140.17."
}
],
"affected": [
{
"source": "[email protected]",
"affectedData": [
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"product": "Firefox",
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},
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{
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},
{
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}
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},
{
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},
{
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}
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}
],
"metrics": {
"cvssMetricV31": [
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"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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],
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"id": "CVE-2026-100797",
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"value": "CWE-416"
}
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"configurations": [
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"source": "[email protected]",
"tags": [
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]
},
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{
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}