CVE-2026-58525: CWE-284: Improper Access Control in Microsoft Microsoft Edge (Chromium-based)
Improper access control in Microsoft Edge (Chromium-based) allows an unauthorized attacker to bypass a security feature over a network.
AI Analysis
Technical Summary
This vulnerability (CVE-2026-58525) in Microsoft Edge (Chromium-based) is classified as CWE-284 (Improper Access Control). It enables an attacker without privileges to bypass security controls remotely, affecting confidentiality with limited integrity impact and no availability impact. The CVSS v3.1 base score is 8.2, reflecting network attack vector, low attack complexity, no privileges required, user interaction required, and scope change. Microsoft has released an official fix for this issue.
Potential Impact
An attacker can bypass security features remotely without privileges, leading to a complete loss of confidentiality and partial loss of integrity. There is no impact on availability. This could allow unauthorized access to sensitive information or functionality within Microsoft Edge.
Mitigation Recommendations
An official fix is available from Microsoft. Users and administrators should apply the security update provided in the Microsoft advisory at https://msrc.microsoft.com/update-guide/vulnerability/CVE-2026-58525 to remediate this vulnerability.
CVE-2026-58525: 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 bypass a security feature over a network.
CVSS v3.1
Score 8.2high
Affected software
Weaknesses
AI-Powered Analysis
Machine-generated threat intelligence
Technical Analysis
This vulnerability (CVE-2026-58525) in Microsoft Edge (Chromium-based) is classified as CWE-284 (Improper Access Control). It enables an attacker without privileges to bypass security controls remotely, affecting confidentiality with limited integrity impact and no availability impact. The CVSS v3.1 base score is 8.2, reflecting network attack vector, low attack complexity, no privileges required, user interaction required, and scope change. Microsoft has released an official fix for this issue.
Potential Impact
An attacker can bypass security features remotely without privileges, leading to a complete loss of confidentiality and partial loss of integrity. There is no impact on availability. This could allow unauthorized access to sensitive information or functionality within Microsoft Edge.
Mitigation Recommendations
An official fix is available from Microsoft. Users and administrators should apply the security update provided in the Microsoft advisory at https://msrc.microsoft.com/update-guide/vulnerability/CVE-2026-58525 to remediate this vulnerability.
Technical Details
- Data Version
- 5.2
- Assigner Short Name
- microsoft
- Date Reserved
- 2026-07-01T04:33:41.869Z
- Cvss Version
- 3.1
- State
- PUBLISHED
- Remediation Level
- official-fix
- Vendor Advisory Urls
- [{"url":"https://msrc.microsoft.com/update-guide/vulnerability/CVE-2026-58525","vendor":"Microsoft"}]
Threat ID: 6a4ebdf5c9d9e3dbe3bf8b25
Added to database: 07/08/2026, 21:15:33 UTC
Last enriched: 08/14/2026, 15:21:20 UTC
Last updated: 08/22/2026, 11:05:23 UTC
Views: 133
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