CVE-2026-70341
Full vulnerability record from the local CVENow database.
Description
Use after free in Microsoft Edge (Chromium-based) allows an authorized attacker to execute code over a network.
Severity
HIGH
CVSS score
8.8
(v3.1)
Vulnerability status
Analyzed
Source identifier
Published
2026-09-11 16:17:46.080000
Last modified
2026-10-28 21:17:16.087000
View original CVE JSON
{
"id": "CVE-2026-70341",
"sourceIdentifier": "[email protected]",
"published": "2026-09-11T16:17:46.080",
"lastModified": "2026-10-28T21:17:16.087",
"vulnStatus": "Analyzed",
"cveTags": [],
"descriptions": [
{
"lang": "en",
"value": "Use after free in Microsoft Edge (Chromium-based) allows an authorized attacker to execute code over a network."
}
],
"affected": [
{
"source": "[email protected]",
"affectedData": [
{
"vendor": "Microsoft",
"product": "Microsoft Edge (Chromium-based)",
"versions": [
{
"version": "1.0.0.0",
"lessThan": "152.0.4191.52",
"versionType": "custom",
"status": "affected"
}
]
},
{
"vendor": "Microsoft",
"product": "Microsoft Edge for Android",
"versions": [
{
"version": "1.0.0.0",
"lessThan": "152.0.4191.52",
"versionType": "custom",
"status": "affected"
}
]
},
{
"vendor": "Microsoft",
"product": "Microsoft Edge for iOS",
"versions": [
{
"version": "1.0.0.0",
"lessThan": "152.0.4191.52",
"versionType": "custom",
"status": "affected"
}
]
},
{
"vendor": "Microsoft",
"product": "Microsoft Edge for Linux",
"versions": [
{
"version": "1.0.0",
"lessThan": "152.0.4191.52",
"versionType": "custom",
"status": "affected"
}
]
},
{
"vendor": "Microsoft",
"product": "Microsoft Edge for MAC",
"versions": [
{
"version": "1.0.0.0",
"lessThan": "152.0.4191.52",
"versionType": "custom",
"status": "affected"
}
]
},
{
"vendor": "Microsoft",
"product": "Microsoft Edge for Windows",
"versions": [
{
"version": "1.0.0.0",
"lessThan": "152.0.4191.52",
"versionType": "custom",
"status": "affected"
}
]
}
]
}
],
"metrics": {
"cvssMetricV31": [
{
"source": "[email protected]",
"type": "Secondary",
"cvssData": {
"version": "3.1",
"vectorString": "CVSS:3.1/AV:N/AC:H/PR:L/UI:N/S:C/C:H/I:H/A:H",
"baseScore": 8.5,
"baseSeverity": "HIGH",
"attackVector": "NETWORK",
"attackComplexity": "HIGH",
"privilegesRequired": "LOW",
"userInteraction": "NONE",
"scope": "CHANGED",
"confidentialityImpact": "HIGH",
"integrityImpact": "HIGH",
"availabilityImpact": "HIGH"
},
"exploitabilityScore": 1.8,
"impactScore": 6.0
},
{
"source": "[email protected]",
"type": "Primary",
"cvssData": {
"version": "3.1",
"vectorString": "CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H",
"baseScore": 8.8,
"baseSeverity": "HIGH",
"attackVector": "NETWORK",
"attackComplexity": "LOW",
"privilegesRequired": "LOW",
"userInteraction": "NONE",
"scope": "UNCHANGED",
"confidentialityImpact": "HIGH",
"integrityImpact": "HIGH",
"availabilityImpact": "HIGH"
},
"exploitabilityScore": 2.8,
"impactScore": 5.9
}
],
"ssvcV203": [
{
"source": "134c704f-9b21-4f2e-91b3-4a467353bcc0",
"ssvcData": {
"timestamp": "2026-09-12T03:55:42.747889Z",
"id": "CVE-2026-70341",
"options": [
{
"exploitation": "none"
},
{
"automatable": "no"
},
{
"technicalImpact": "total"
}
],
"role": "CISA Coordinator",
"version": "2.0.3"
}
}
]
},
"weaknesses": [
{
"source": "[email protected]",
"type": "Secondary",
"description": [
{
"lang": "en",
"value": "CWE-416"
}
]
}
],
"configurations": [
{
"operator": "AND",
"nodes": [
{
"operator": "OR",
"negate": false,
"cpeMatch": [
{
"vulnerable": true,
"criteria": "cpe:2.3:a:microsoft:edge:-:*:*:*:*:*:*:*",
"matchCriteriaId": "77D197D7-57FB-4898-8C70-B19D5F0D5BE0"
}
]
},
{
"operator": "OR",
"negate": false,
"cpeMatch": [
{
"vulnerable": false,
"criteria": "cpe:2.3:o:apple:macos:-:*:*:*:*:*:*:*",
"matchCriteriaId": "387021A0-AF36-463C-A605-32EA7DAC172E"
},
{
"vulnerable": false,
"criteria": "cpe:2.3:o:linux:linux_kernel:-:*:*:*:*:*:*:*",
"matchCriteriaId": "703AF700-7A70-47E2-BC3A-7FD03B3CA9C1"
}
]
}
]
},
{
"nodes": [
{
"operator": "OR",
"negate": false,
"cpeMatch": [
{
"vulnerable": true,
"criteria": "cpe:2.3:a:microsoft:edge:*:*:*:*:*:android:*:*",
"versionEndExcluding": "152.0.4191.52",
"matchCriteriaId": "8CD83793-9E86-4E35-AC8D-C5BD78A4FBFA"
},
{
"vulnerable": true,
"criteria": "cpe:2.3:a:microsoft:edge:*:*:*:*:*:iphone_os:*:*",
"versionEndExcluding": "152.0.4191.52",
"matchCriteriaId": "BE9D24FA-FCD0-402C-9AA0-2C17C41F49C4"
},
{
"vulnerable": true,
"criteria": "cpe:2.3:a:microsoft:edge_chromium:*:*:*:*:-:*:*:*",
"versionEndExcluding": "152.0.4191.52",
"matchCriteriaId": "3628EC7C-81A5-4684-9299-734A5D1D437E"
}
]
}
]
}
],
"references": [
{
"url": "https://msrc.microsoft.com/update-guide/vulnerability/CVE-2026-70341",
"source": "[email protected]",
"tags": [
"Patch",
"Vendor Advisory"
]
}
]
}