CVE-2026-58276: 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 code execution by an unauthorized attacker due to improper handling of memory, specifically use-after-free conditions. The CVSS vector indicates the attack requires network access, has high complexity, no privileges required, and user interaction is needed. Confidentiality, integrity, and availability impacts are all high. Microsoft has released an official fix for this vulnerability.
Potential Impact
Successful exploitation could allow an attacker to execute arbitrary code remotely on the affected system, potentially leading to full compromise of confidentiality, integrity, and availability of the system running Microsoft Edge (Chromium-based).
Mitigation Recommendations
An official fix is available from Microsoft. Users and administrators should apply the security update provided by Microsoft as soon as possible to remediate this vulnerability. Refer to the Microsoft advisory at https://msrc.microsoft.com/update-guide/vulnerability/CVE-2026-58276 for update details and instructions.
CVE-2026-58276: 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 7.5high
Affected software
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 code execution by an unauthorized attacker due to improper handling of memory, specifically use-after-free conditions. The CVSS vector indicates the attack requires network access, has high complexity, no privileges required, and user interaction is needed. Confidentiality, integrity, and availability impacts are all high. Microsoft has released an official fix for this vulnerability.
Potential Impact
Successful exploitation could allow an attacker to execute arbitrary code remotely on the affected system, potentially leading to full compromise of confidentiality, integrity, and availability of the system running Microsoft Edge (Chromium-based).
Mitigation Recommendations
An official fix is available from Microsoft. Users and administrators should apply the security update provided by Microsoft as soon as possible to remediate this vulnerability. Refer to the Microsoft advisory at https://msrc.microsoft.com/update-guide/vulnerability/CVE-2026-58276 for update details and 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-2026-58276","vendor":"Microsoft"}]
Threat ID: 6a48210227e9c79719accbd9
Added to database: 07/03/2026, 20:52:18 UTC
Last enriched: 07/03/2026, 21:05:41 UTC
Last updated: 07/03/2026, 22:52:00 UTC
Views: 3
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