CVE-2026-58286: CWE-284: Improper Access Control in Microsoft Microsoft Edge (Chromium-based)
Improper access control in Microsoft Edge (Chromium-based) allows an unauthorized attacker to perform spoofing over a network.
AI Analysis
Technical Summary
This vulnerability (CVE-2026-58286) in Microsoft Edge (Chromium-based) is classified as CWE-284 (Improper Access Control). It enables an unauthorized attacker to conduct spoofing attacks over a network, potentially impacting confidentiality, integrity, and availability. The CVSS 3.1 vector indicates network attack vector, high attack complexity, no privileges required, no user interaction, scope changed, with low confidentiality impact, high integrity impact, and low availability impact. Microsoft has published an official fix for this issue.
Potential Impact
The vulnerability allows an attacker without privileges or user interaction to spoof network communications, which can lead to high integrity impact and low confidentiality and availability impacts. This could enable attackers to impersonate or manipulate network data within the context of Microsoft Edge (Chromium-based).
Mitigation Recommendations
An official fix is available from Microsoft. Users and administrators should apply the provided security update as detailed in the Microsoft advisory at https://msrc.microsoft.com/update-guide/vulnerability/CVE-2026-58286 to remediate this vulnerability.
CVE-2026-58286: CWE-284: Improper Access Control in Microsoft Microsoft Edge (Chromium-based)
Description
Improper access control in Microsoft Edge (Chromium-based) allows an unauthorized attacker to perform spoofing over a network.
CVSS v3.1
Score 8.1high
Affected software
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Weaknesses
AI-Powered Analysis
Machine-generated threat intelligence
Technical Analysis
This vulnerability (CVE-2026-58286) in Microsoft Edge (Chromium-based) is classified as CWE-284 (Improper Access Control). It enables an unauthorized attacker to conduct spoofing attacks over a network, potentially impacting confidentiality, integrity, and availability. The CVSS 3.1 vector indicates network attack vector, high attack complexity, no privileges required, no user interaction, scope changed, with low confidentiality impact, high integrity impact, and low availability impact. Microsoft has published an official fix for this issue.
Potential Impact
The vulnerability allows an attacker without privileges or user interaction to spoof network communications, which can lead to high integrity impact and low confidentiality and availability impacts. This could enable attackers to impersonate or manipulate network data within the context of Microsoft Edge (Chromium-based).
Mitigation Recommendations
An official fix is available from Microsoft. Users and administrators should apply the provided security update as detailed in the Microsoft advisory at https://msrc.microsoft.com/update-guide/vulnerability/CVE-2026-58286 to remediate this vulnerability.
Technical Details
- Data Version
- 5.2
- Assigner Short Name
- microsoft
- Date Reserved
- 2026-06-29T21:59:30.870Z
- Cvss Version
- 3.1
- State
- PUBLISHED
- Remediation Level
- official-fix
- Vendor Advisory Urls
- [{"url":"https://msrc.microsoft.com/update-guide/vulnerability/CVE-2026-58286","vendor":"Microsoft"}]
Threat ID: 6a48210227e9c79719accbeb
Added to database: 07/03/2026, 20:52:18 UTC
Last enriched: 07/03/2026, 21:06:21 UTC
Last updated: 07/04/2026, 01:34:41 UTC
Views: 7
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