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Microsoft Edge Chromium Based CVE-2026-58288

| EUVDEUVD-2026-41585 HIGH
Use After Free (CWE-416)
2026-07-03 microsoft GHSA-x7pj-r739-2qv7
8.3
CVSS 3.1 · Vendor: microsoft
Temporal: 7.2
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Severity by source

Vendor (microsoft) PRIMARY
8.3 HIGH
AV:N/AC:H/PR:N/UI:R/S:C/C:H/I:H/A:H
CIRCL (temporal)
7.2 HIGH
cvss

Primary rating from Vendor (microsoft).

CVSS VectorVendor: microsoft

Attack Vector
Network
Attack Complexity
High
Privileges Required
None
User Interaction
Required
Scope
Changed
Confidentiality
High
Integrity
High
Availability
High

Lifecycle Timeline

2
Analysis Generated
Jul 03, 2026 - 21:46 vuln.today
CVE Published
Jul 03, 2026 - 20:35 nvd
HIGH 8.3

DescriptionCVE.org

Use after free 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 use-after-free (CWE-416) memory-corruption flaw that an unauthenticated, network-based attacker can trigger to run arbitrary code in the browser process. Exploitation requires the victim to interact — typically by visiting a malicious or compromised web page — and the CVSS 3.1 score of 8.3 reflects high attack complexity plus a scope change consistent with a renderer sandbox escape. There is no public exploit identified at time of analysis and no CISA KEV listing, though the underlying Chromium engine origin (tags reference Google) means a shared upstream root cause across Chromium browsers is likely.

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CVE-2026-58288 vulnerability details – vuln.today

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