CVE-2026-58525: CWE-284: Improper Access Control in Microsoft Microsoft Edge (Chromium-based)
CVE-2026-58525 is a high-severity vulnerability in Microsoft Edge (Chromium-based) involving improper access control. This flaw allows an unauthorized attacker to bypass a security feature over a network, potentially leading to significant confidentiality impact. The vulnerability has an official fix available from Microsoft.
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 unauthorized attacker 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 published an official fix for this issue.
Potential Impact
An attacker can bypass security features remotely without privileges, which can lead to a complete loss of confidentiality of information. Integrity impact is limited, and availability is not affected. 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 security update provided by Microsoft as detailed in the vendor 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
CVE-2026-58525 is a high-severity vulnerability in Microsoft Edge (Chromium-based) involving improper access control. This flaw allows an unauthorized attacker to bypass a security feature over a network, potentially leading to significant confidentiality impact. The vulnerability has an official fix available from Microsoft.
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 unauthorized attacker 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 published an official fix for this issue.
Potential Impact
An attacker can bypass security features remotely without privileges, which can lead to a complete loss of confidentiality of information. Integrity impact is limited, and availability is not affected. 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 security update provided by Microsoft as detailed in the vendor 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: 07/08/2026, 21:28:16 UTC
Last updated: 07/08/2026, 22:22:38 UTC
Views: 5
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