CVE-2026-58299

Time-of-check time-of-use (toctou) race condition in Microsoft Edge for Android allows an unauthorized attacker to execute code over a network.

CVSS v3 7.5 HIGH

7.5^/10

CVSS v3 : HIGH

Vector :

Exploitability : 1.6 / Impact : 5.9

Attack Vector NETWORK

Attack Complexity HIGH

Privileges Required NONE

User Interaction REQUIRED

Confidentiality Impact HIGH

Integrity Impact HIGH

Availability Impact HIGH

Scope UNCHANGED

References

Link	Resource
https://msrc.microsoft.com/update-guide/vulnerability/CVE-2026-58299	Vendor Advisory

Configurations

Configuration 1 (hide)

AND

cpe:2.3:a:microsoft:edge_chromium:*:*:*:*:*:*:*:*

cpe:2.3:o:google:android:-:*:*:*:*:*:*:*

History

25 Oct 2026, 15:10

Type	Values Removed	Values Added
Summary		(es) Una condición de carrera ’time-of-check time-of-use’ (toctou) en Microsoft Edge para Android permite a un atacante no autorizado ejecutar código a través de una red.

Information

Published : 2026-07-03 21:17

Updated : 2026-10-25 15:10

NVD link : CVE-2026-58299

Mitre link : CVE-2026-58299

CVE.ORG link : CVE-2026-58299

JSON object : View

Products Affected

google

android

microsoft

edge_chromium

CWE

CWE-367

Time-of-check Time-of-use (TOCTOU) Race Condition

{"id": "CVE-2026-58299", "cveTags": [], "metrics": {"ssvcV203": [{"source": "134c704f-9b21-4f2e-91b3-4a467353bcc0", "ssvcData": {"id": "CVE-2026-58299", "role": "CISA Coordinator", "options": [{"exploitation": "none"}, {"automatable": "no"}, {"technicalImpact": "total"}], "version": "2.0.3", "timestamp": "2026-07-06T00:00:00+00:00"}}], "cvssMetricV31": [{"type": "Secondary", "source": "secure@microsoft.com", "cvssData": {"scope": "UNCHANGED", "version": "3.1", "baseScore": 7.5, "attackVector": "NETWORK", "baseSeverity": "HIGH", "vectorString": "CVSS:3.1/AV:N/AC:H/PR:N/UI:R/S:U/C:H/I:H/A:H", "integrityImpact": "HIGH", "userInteraction": "REQUIRED", "attackComplexity": "HIGH", "availabilityImpact": "HIGH", "privilegesRequired": "NONE", "confidentialityImpact": "HIGH"}, "impactScore": 5.9, "exploitabilityScore": 1.6}]}, "affected": [{"source": "secure@microsoft.com", "affectedData": [{"vendor": "Microsoft", "product": "Microsoft Edge (Chromium-based)", "versions": [{"status": "affected", "version": "1.0.0.0", "lessThan": "150.0.4078.48", "versionType": "custom"}]}]}], "published": "2026-07-03T21:17:04.907", "references": [{"url": "https://msrc.microsoft.com/update-guide/vulnerability/CVE-2026-58299", "tags": ["Vendor Advisory"], "source": "secure@microsoft.com"}], "vulnStatus": "Analyzed", "weaknesses": [{"type": "Secondary", "source": "secure@microsoft.com", "description": [{"lang": "en", "value": "CWE-367"}]}], "descriptions": [{"lang": "en", "value": "Time-of-check time-of-use (toctou) race condition in Microsoft Edge for Android allows an unauthorized attacker to execute code over a network."}, {"lang": "es", "value": "Una condici\u00f3n de carrera \u2019time-of-check time-of-use\u2019 (toctou) en Microsoft Edge para Android permite a un atacante no autorizado ejecutar c\u00f3digo a trav\u00e9s de una red."}], "lastModified": "2026-10-25T15:10:00.147", "configurations": [{"nodes": [{"negate": false, "cpeMatch": [{"criteria": "cpe:2.3:a:microsoft:edge_chromium:*:*:*:*:*:*:*:*", "vulnerable": true, "matchCriteriaId": "0C006CA1-F693-4B52-BC1A-A7B44979EAB8", "versionEndExcluding": "150.0.4078.48"}], "operator": "OR"}, {"negate": false, "cpeMatch": [{"criteria": "cpe:2.3:o:google:android:-:*:*:*:*:*:*:*", "vulnerable": false, "matchCriteriaId": "F8B9FEC8-73B6-43B8-B24E-1F7C20D91D26"}], "operator": "OR"}], "operator": "AND"}], "sourceIdentifier": "secure@microsoft.com"}