CVE-2026-66315: CWE-416: Use After Free in Microsoft Microsoft Edge (Chromium-based)
CVE-2026-66315 is a use-after-free vulnerability in Microsoft Edge (Chromium-based) that allows an unauthorized attacker to execute code remotely. The vulnerability affects version 1.0.0.0 of the product. Microsoft has released an official fix to address this issue. The vulnerability has a high severity score of 7.5 and requires user interaction to be exploited.
AI Analysis
Technical Summary
This vulnerability is a use-after-free condition in Microsoft Edge (Chromium-based) version 1.0.0.0. It allows remote code execution by an unauthorized attacker over a network, contingent on user interaction. The CVSS 3.1 base score is 7.5, reflecting high impact on confidentiality, integrity, and availability. Microsoft has published an official fix to remediate this vulnerability.
Potential Impact
Successful exploitation could lead to remote code execution with high impact on confidentiality, integrity, and availability of the affected system. The attacker does not require privileges but does require user interaction. 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 patch provided by Microsoft as soon as possible to remediate this vulnerability. Refer to the Microsoft Security Response Center advisory at https://msrc.microsoft.com/update-guide/vulnerability/CVE-2026-66315 for detailed update instructions.
CVE-2026-66315: CWE-416: Use After Free in Microsoft Microsoft Edge (Chromium-based)
Description
CVE-2026-66315 is a use-after-free vulnerability in Microsoft Edge (Chromium-based) that allows an unauthorized attacker to execute code remotely. The vulnerability affects version 1.0.0.0 of the product. Microsoft has released an official fix to address this issue. The vulnerability has a high severity score of 7.5 and requires user interaction to be exploited.
CVSS v3.1
Score 7.5high
Affected software
Weaknesses
AI-Powered Analysis
Machine-generated threat intelligence
Technical Analysis
This vulnerability is a use-after-free condition in Microsoft Edge (Chromium-based) version 1.0.0.0. It allows remote code execution by an unauthorized attacker over a network, contingent on user interaction. The CVSS 3.1 base score is 7.5, reflecting high impact on confidentiality, integrity, and availability. Microsoft has published an official fix to remediate this vulnerability.
Potential Impact
Successful exploitation could lead to remote code execution with high impact on confidentiality, integrity, and availability of the affected system. The attacker does not require privileges but does require user interaction. 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 patch provided by Microsoft as soon as possible to remediate this vulnerability. Refer to the Microsoft Security Response Center advisory at https://msrc.microsoft.com/update-guide/vulnerability/CVE-2026-66315 for detailed update instructions.
Technical Details
- Data Version
- 5.2
- Assigner Short Name
- microsoft
- Date Reserved
- 2026-07-24T18:06:51.295Z
- Cvss Version
- 3.1
- State
- PUBLISHED
- Remediation Level
- official-fix
- Vendor Advisory Urls
- [{"url":"https://msrc.microsoft.com/update-guide/vulnerability/CVE-2026-66315","vendor":"Microsoft"}]
Threat ID: 6a7121fcbf32cb7a3462c064
Added to database: 08/03/2026, 23:19:24 UTC
Last enriched: 08/03/2026, 23:33:06 UTC
Last updated: 08/03/2026, 23:37:55 UTC
Views: 3
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