CVE-2026-121843
Full vulnerability record from the local CVENow database.
Description
Privilege escalation in Firefox for iOS. This vulnerability was fixed in Firefox for iOS 160.0.
Severity
HIGH
CVSS score
8.8
(v3.1)
Vulnerability status
Received
Source identifier
Published
2026-11-09 14:17:08.520000
Last modified
2026-11-09 15:17:12.623000
View original CVE JSON
{
"id": "CVE-2026-121843",
"sourceIdentifier": "[email protected]",
"published": "2026-11-09T14:17:08.520",
"lastModified": "2026-11-09T15:17:12.623",
"vulnStatus": "Received",
"cveTags": [],
"descriptions": [
{
"lang": "en",
"value": "Privilege escalation in Firefox for iOS. This vulnerability was fixed in Firefox for iOS 160.0."
}
],
"affected": [
{
"source": "[email protected]",
"affectedData": [
{
"vendor": "Mozilla",
"product": "Firefox for iOS",
"versions": [
{
"version": "160.0",
"lessThanOrEqual": "*",
"versionType": "rpm",
"status": "unaffected"
}
]
}
]
}
],
"metrics": {
"cvssMetricV31": [
{
"source": "134c704f-9b21-4f2e-91b3-4a467353bcc0",
"type": "Secondary",
"cvssData": {
"version": "3.1",
"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"
},
"exploitabilityScore": 2.8,
"impactScore": 5.9
}
],
"ssvcV203": [
{
"source": "134c704f-9b21-4f2e-91b3-4a467353bcc0",
"ssvcData": {
"timestamp": "2026-11-09T14:34:35.602623Z",
"id": "CVE-2026-121843",
"options": [
{
"exploitation": "none"
},
{
"automatable": "no"
},
{
"technicalImpact": "total"
}
],
"role": "CISA Coordinator",
"version": "2.0.3"
}
}
]
},
"references": [
{
"url": "https://bugzilla.mozilla.org/show_bug.cgi?id=2083030",
"source": "[email protected]"
},
{
"url": "https://www.mozilla.org/security/advisories/mfsa2026-124/",
"source": "[email protected]"
}
]
}