CVE-2026-58295: 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 bypass a security feature over a network.
AI Analysis
Technical Summary
This vulnerability, identified as CWE-843 (Access of Resource Using Incompatible Type or 'Type Confusion'), exists in Microsoft Edge (Chromium-based). It allows an attacker to bypass security features remotely by exploiting improper handling of resource types. The CVSS 3.1 base score is 8.3, indicating high severity with network attack vector, low attack complexity, no privileges or user interaction required, and impacts on confidentiality, integrity, and availability. Microsoft has published an official fix for this issue.
Potential Impact
Successful exploitation can lead to bypassing security features remotely without requiring user interaction or privileges, potentially resulting in partial loss of confidentiality, integrity, and availability of the affected system.
Mitigation Recommendations
An official fix is available from Microsoft. Users and administrators should apply the patch provided in the Microsoft Security Response Center advisory at https://msrc.microsoft.com/update-guide/vulnerability/CVE-2026-58295 to remediate this vulnerability.
CVE-2026-58295: 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 bypass a security feature over a network.
CVSS v3.1
Score 8.3high
Affected software
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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'), exists in Microsoft Edge (Chromium-based). It allows an attacker to bypass security features remotely by exploiting improper handling of resource types. The CVSS 3.1 base score is 8.3, indicating high severity with network attack vector, low attack complexity, no privileges or user interaction required, and impacts on confidentiality, integrity, and availability. Microsoft has published an official fix for this issue.
Potential Impact
Successful exploitation can lead to bypassing security features remotely without requiring user interaction or privileges, potentially resulting in partial loss of confidentiality, integrity, and availability of the affected system.
Mitigation Recommendations
An official fix is available from Microsoft. Users and administrators should apply the patch provided in the Microsoft Security Response Center advisory at https://msrc.microsoft.com/update-guide/vulnerability/CVE-2026-58295 to remediate this vulnerability.
Technical Details
- Data Version
- 5.2
- Assigner Short Name
- microsoft
- Date Reserved
- 2026-06-29T21:59:30.871Z
- Cvss Version
- 3.1
- State
- PUBLISHED
- Remediation Level
- official-fix
- Vendor Advisory Urls
- [{"url":"https://msrc.microsoft.com/update-guide/vulnerability/CVE-2026-58295","vendor":"Microsoft"}]
Threat ID: 6a48210527e9c79719accc7f
Added to database: 07/03/2026, 20:52:21 UTC
Last enriched: 08/17/2026, 14:13:25 UTC
Last updated: 08/17/2026, 22:34:01 UTC
Views: 126
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