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 in Microsoft Edge (Chromium-based) arises from an access of resource using an incompatible type, known as type confusion (CWE-843). It enables an attacker to execute arbitrary code remotely over a network. The CVSS 3.1 base score is 8.3, reflecting high impact on confidentiality, integrity, and availability, with attack vector network, high attack complexity, no privileges required, and user interaction required. Microsoft has published an official fix for this issue.
Potential Impact
Successful exploitation allows remote code execution with high impact on confidentiality, integrity, and availability of the affected system. The attacker does not require privileges but does require user interaction. The vulnerability affects Microsoft Edge (Chromium-based) version 1.0.0.0.
Mitigation Recommendations
An official fix is available from Microsoft. Users and administrators should apply the vendor-provided patch promptly to remediate this vulnerability. Refer to the Microsoft Security Response Center advisory at https://msrc.microsoft.com/update-guide/vulnerability/CVE-2026-58285 for update details and installation instructions.
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 in Microsoft Edge (Chromium-based) arises from an access of resource using an incompatible type, known as type confusion (CWE-843). It enables an attacker to execute arbitrary code remotely over a network. The CVSS 3.1 base score is 8.3, reflecting high impact on confidentiality, integrity, and availability, with attack vector network, high attack complexity, no privileges required, and user interaction required. Microsoft has published an official fix for this issue.
Potential Impact
Successful exploitation allows remote code execution with high impact on confidentiality, integrity, and availability of the affected system. The attacker does not require privileges but does require user interaction. The vulnerability affects Microsoft Edge (Chromium-based) version 1.0.0.0.
Mitigation Recommendations
An official fix is available from Microsoft. Users and administrators should apply the vendor-provided patch promptly to remediate this vulnerability. Refer to the Microsoft Security Response Center advisory at https://msrc.microsoft.com/update-guide/vulnerability/CVE-2026-58285 for update details and installation instructions.
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: 08/17/2026, 14:12:04 UTC
Last updated: 08/17/2026, 22:34:04 UTC
Views: 88
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