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Microsoft Edge Chromium Based CVE-2026-58290

| EUVDEUVD-2026-41587 HIGH
Access of Resource Using Incompatible Type (Type Confusion) (CWE-843)
2026-07-03 microsoft GHSA-wrqp-3qp3-gqcj
7.5
CVSS 3.1 · Vendor: microsoft
Temporal: 6.5
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Severity by source

Vendor (microsoft) PRIMARY
7.5 HIGH
AV:N/AC:H/PR:N/UI:R/S:C/C:L/I:H/A:L
CIRCL (temporal)
6.5 MEDIUM
cvss

Primary rating from Vendor (microsoft).

CVSS VectorVendor: microsoft

CVSS:3.1/AV:N/AC:H/PR:N/UI:R/S:C/C:L/I:H/A:L
Attack Vector
Network
Attack Complexity
High
Privileges Required
None
User Interaction
Required
Scope
Changed
Confidentiality
Low
Integrity
High
Availability
Low

Lifecycle Timeline

2
Analysis Generated
Jul 03, 2026 - 21:43 vuln.today
CVE Published
Jul 03, 2026 - 20:35 nvd
HIGH 7.5

DescriptionCVE.org

Access of resource using incompatible type ('type confusion') in Microsoft Edge (Chromium-based) allows an unauthorized attacker to execute code over a network.

AnalysisAI

Remote code execution in Microsoft Edge (Chromium-based) stems from a type confusion flaw (CWE-843) that an unauthorized attacker can trigger over the network to run arbitrary code, provided the victim interacts with attacker-controlled web content. Microsoft self-reported and has shipped a fix; there is no public exploit identified at time of analysis and it is not listed in CISA KEV. …

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Within 24 hours: Distribute security alert identifying all Microsoft Edge users and directing them to available patches via Microsoft Security Update Guide. …

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CVE-2026-58290 vulnerability details – vuln.today

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