CVE-2025-21307: CWE-416: Use After Free in Microsoft Windows 10 Version 1507
Windows Reliable Multicast Transport Driver (RMCAST) Remote Code Execution Vulnerability
AI Analysis
Technical Summary
CVE-2025-21307 is a use-after-free vulnerability (CWE-416) in the Windows Reliable Multicast Transport Driver (RMCAST) component of Microsoft Windows 10 Version 1507 (build 10.0.10240.0). The vulnerability can be exploited remotely over the network without authentication or user interaction, leading to remote code execution with high impact on confidentiality, integrity, and availability. The CVSS v3.1 base score is 9.8, reflecting its critical severity. Microsoft has published an official fix to address this issue.
Potential Impact
Successful exploitation of this vulnerability could allow an unauthenticated attacker to execute arbitrary code remotely on the affected system. This can lead to full system compromise, including complete loss of confidentiality, integrity, and availability of the affected Windows 10 Version 1507 system.
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-2025-21307 for detailed patch information and deployment guidance.
CVE-2025-21307: CWE-416: Use After Free in Microsoft Windows 10 Version 1507
Description
Windows Reliable Multicast Transport Driver (RMCAST) Remote Code Execution Vulnerability
CVSS v3.1
Score 9.8critical
Affected software
Weaknesses
AI-Powered Analysis
Machine-generated threat intelligence
Technical Analysis
CVE-2025-21307 is a use-after-free vulnerability (CWE-416) in the Windows Reliable Multicast Transport Driver (RMCAST) component of Microsoft Windows 10 Version 1507 (build 10.0.10240.0). The vulnerability can be exploited remotely over the network without authentication or user interaction, leading to remote code execution with high impact on confidentiality, integrity, and availability. The CVSS v3.1 base score is 9.8, reflecting its critical severity. Microsoft has published an official fix to address this issue.
Potential Impact
Successful exploitation of this vulnerability could allow an unauthenticated attacker to execute arbitrary code remotely on the affected system. This can lead to full system compromise, including complete loss of confidentiality, integrity, and availability of the affected Windows 10 Version 1507 system.
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-2025-21307 for detailed patch information and deployment guidance.
Technical Details
- Data Version
- 5.1
- Assigner Short Name
- microsoft
- Date Reserved
- 2024-12-10T23:54:12.952Z
- Cvss Version
- 3.1
- State
- PUBLISHED
- Remediation Level
- official-fix
- Vendor Advisory Urls
- [{"url":"https://msrc.microsoft.com/update-guide/vulnerability/CVE-2025-21307","vendor":"Microsoft"}]
Threat ID: 68c0bd519ed239a66badeb9b
Added to database: 09/09/2025, 23:50:41 UTC
Last enriched: 06/10/2026, 09:52:24 UTC
Last updated: 09/10/2026, 19:36:49 UTC
Views: 171
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