CVE-2026-70341

Use after free in Microsoft Edge (Chromium-based) allows an authorized attacker to execute code over a network.

CVSS v3 8.5 HIGH

8.5^/10

CVSS v3 : HIGH

Vector :

Exploitability : 1.8 / Impact : 6.0

Attack Vector NETWORK

Attack Complexity HIGH

Privileges Required LOW

User Interaction NONE

Confidentiality Impact HIGH

Integrity Impact HIGH

Availability Impact HIGH

Scope CHANGED

References

Link	Resource
https://msrc.microsoft.com/update-guide/vulnerability/CVE-2026-70341	Patch Vendor Advisory

Configurations

Configuration 1 (hide)

AND

cpe:2.3:a:microsoft:edge:-:*:*:*:*:*:*:*

OR	cpe:2.3:o:apple:macos:-:::::::*
	cpe:2.3:o:linux:linux_kernel:-:::::::*

Configuration 2 (hide)

OR	cpe:2.3:a:microsoft:edge::::::android::*
	cpe:2.3:a:microsoft:edge::::::iphone_os::*
	cpe:2.3:a:microsoft:edge_chromium:::::-:::*

History

06 Oct 2026, 15:45

Type	Values Removed	Values Added
CPE		cpe:2.3:o:linux:linux_kernel:-:::::::* cpe:2.3:o:apple:macos:-:::::::* cpe:2.3:a:microsoft:edge_chromium:::::-:::* cpe:2.3:a:microsoft:edge:-:::::::* cpe:2.3:a:microsoft:edge::::::android::* cpe:2.3:a:microsoft:edge::::::iphone_os::*
First Time		Linux Linux linux Kernel Microsoft Apple macos Apple Microsoft edge Chromium Microsoft edge
References	~~() https://msrc.microsoft.com/update-guide/vulnerability/CVE-2026-70341 -~~	() https://msrc.microsoft.com/update-guide/vulnerability/CVE-2026-70341 - Patch, Vendor Advisory

Information

Published : 2026-09-11 16:17

Updated : 2026-10-28 21:17

NVD link : CVE-2026-70341

Mitre link : CVE-2026-70341

CVE.ORG link : CVE-2026-70341

JSON object : View

Products Affected

linux

linux_kernel

apple

macos

microsoft

edge_chromium
edge

CWE

CWE-416

Use After Free

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