CVE-2026-58287: CWE-416: Use After Free in Microsoft Microsoft Edge (Chromium-based)
Use after free in Microsoft Edge (Chromium-based) allows an unauthorized attacker to execute code over a network.
AI Analysis
Technical Summary
This vulnerability, identified as CWE-416 (Use After Free), affects Microsoft Edge (Chromium-based). It allows remote attackers to execute arbitrary code by exploiting a use-after-free condition. The CVSS v3.1 vector indicates network attack vector with high complexity, no privileges required, user interaction required, and complete impact on confidentiality, integrity, and availability. Microsoft has published an official fix for this vulnerability.
Potential Impact
Successful exploitation could allow an attacker to execute arbitrary code remotely, potentially leading to full system compromise including complete 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 security update provided by Microsoft at https://msrc.microsoft.com/update-guide/vulnerability/CVE-2026-58287 to remediate this vulnerability.
CVE-2026-58287: CWE-416: Use After Free in Microsoft Microsoft Edge (Chromium-based)
Description
Use after free in Microsoft Edge (Chromium-based) allows an unauthorized attacker to execute code 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-416 (Use After Free), affects Microsoft Edge (Chromium-based). It allows remote attackers to execute arbitrary code by exploiting a use-after-free condition. The CVSS v3.1 vector indicates network attack vector with high complexity, no privileges required, user interaction required, and complete impact on confidentiality, integrity, and availability. Microsoft has published an official fix for this vulnerability.
Potential Impact
Successful exploitation could allow an attacker to execute arbitrary code remotely, potentially leading to full system compromise including complete 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 security update provided by Microsoft at https://msrc.microsoft.com/update-guide/vulnerability/CVE-2026-58287 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-2026-58287","vendor":"Microsoft"}]
Threat ID: 6a48210527e9c79719accc5b
Added to database: 07/03/2026, 20:52:21 UTC
Last enriched: 08/10/2026, 13:43:30 UTC
Last updated: 08/16/2026, 08:23:51 UTC
Views: 80
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