CVE-2026-58285: CWE-843: Access of Resource Using Incompatible Type ('Type Confusion') in Microsoft Microsoft Edge (Chromium-based)
Access of resource using incompatible type ('type confusion') in Microsoft Edge (Chromium-based) allows an unauthorized attacker to execute code over a network.
AI Analysis
Technical Summary
This vulnerability, identified as CWE-843 (Access of Resource Using Incompatible Type, or type confusion), affects Microsoft Edge (Chromium-based). It enables an attacker to execute arbitrary code remotely by exploiting improper handling of resource types. The CVSS 3.1 base score is 8.3, reflecting high impact on confidentiality, integrity, and availability. Microsoft has published an official fix for this vulnerability.
Potential Impact
Successful exploitation allows an attacker to execute code remotely with high impact on system confidentiality, integrity, and availability. This could lead to full compromise of affected systems running the vulnerable Microsoft Edge version.
Mitigation Recommendations
An official fix is available from Microsoft. Users and administrators should apply the security update provided by Microsoft as detailed in the vendor advisory at https://msrc.microsoft.com/update-guide/vulnerability/CVE-2026-58285 to remediate this vulnerability.
CVE-2026-58285: CWE-843: Access of Resource Using Incompatible Type ('Type Confusion') in Microsoft Microsoft Edge (Chromium-based)
Description
Access of resource using incompatible type ('type confusion') in Microsoft Edge (Chromium-based) allows an unauthorized attacker to execute code over a network.
CVSS v3.1
Score 8.3high
Affected software
Weaknesses
AI-Powered Analysis
Machine-generated threat intelligence
Technical Analysis
This vulnerability, identified as CWE-843 (Access of Resource Using Incompatible Type, or type confusion), affects Microsoft Edge (Chromium-based). It enables an attacker to execute arbitrary code remotely by exploiting improper handling of resource types. The CVSS 3.1 base score is 8.3, reflecting high impact on confidentiality, integrity, and availability. Microsoft has published an official fix for this vulnerability.
Potential Impact
Successful exploitation allows an attacker to execute code remotely with high impact on system confidentiality, integrity, and availability. This could lead to full compromise of affected systems running the vulnerable Microsoft Edge version.
Mitigation Recommendations
An official fix is available from Microsoft. Users and administrators should apply the security update provided by Microsoft as detailed in the vendor advisory at https://msrc.microsoft.com/update-guide/vulnerability/CVE-2026-58285 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-2026-58285","vendor":"Microsoft"}]
Threat ID: 6a48210227e9c79719accbe8
Added to database: 07/03/2026, 20:52:18 UTC
Last enriched: 07/03/2026, 21:06:15 UTC
Last updated: 07/04/2026, 02:21:03 UTC
Views: 6
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