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, identified as CWE-284 (Improper Access Control), exists in Microsoft Edge (Chromium-based) version 1.0.0.0. It allows an attacker without privileges or user interaction to perform network-based spoofing attacks. The CVSS v3.1 score is 8.1, reflecting a high impact on integrity and availability with low impact on confidentiality. Microsoft has published an official fix to address this issue.
Potential Impact
The vulnerability allows an unauthorized attacker to spoof network communications, potentially leading to integrity and availability impacts on affected systems. Confidentiality impact is low. There are no known exploits in the wild at this time.
Mitigation Recommendations
An official fix is available from Microsoft. Users and administrators should apply the provided patch from the Microsoft Security Response Center 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, identified as CWE-284 (Improper Access Control), exists in Microsoft Edge (Chromium-based) version 1.0.0.0. It allows an attacker without privileges or user interaction to perform network-based spoofing attacks. The CVSS v3.1 score is 8.1, reflecting a high impact on integrity and availability with low impact on confidentiality. Microsoft has published an official fix to address this issue.
Potential Impact
The vulnerability allows an unauthorized attacker to spoof network communications, potentially leading to integrity and availability impacts on affected systems. Confidentiality impact is low. There are no known exploits in the wild at this time.
Mitigation Recommendations
An official fix is available from Microsoft. Users and administrators should apply the provided patch from the Microsoft Security Response Center 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: 08/17/2026, 14:12:10 UTC
Last updated: 08/17/2026, 22:34:04 UTC
Views: 55
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