CVE-2025-21278: CWE-362: Concurrent Execution using Shared Resource with Improper Synchronization ('Race Condition') in Microsoft Windows 10 Version 1507
Windows Remote Desktop Gateway (RD Gateway) Denial of Service Vulnerability
AI Analysis
Technical Summary
This vulnerability involves a race condition in the Windows Remote Desktop Gateway on Windows 10 Version 1507 (build 10.0.10240.0). Improper synchronization when accessing shared resources can be exploited to cause a denial of service, impacting availability. The CVSS 3.1 base score is 6.2 (medium), with attack vector local, low attack complexity, no privileges required, no user interaction, and no confidentiality or integrity impact. Microsoft has released an official fix to address this issue.
Potential Impact
Successful exploitation results in denial of service, causing the Remote Desktop Gateway service to become unavailable. There is no impact on confidentiality or integrity. The attack requires local access but no privileges or user interaction.
Mitigation Recommendations
An official fix is available from Microsoft. Users should apply the security update referenced in the Microsoft advisory at https://msrc.microsoft.com/update-guide/vulnerability/CVE-2025-21278 to remediate this vulnerability.
CVE-2025-21278: CWE-362: Concurrent Execution using Shared Resource with Improper Synchronization ('Race Condition') in Microsoft Windows 10 Version 1507
Description
Windows Remote Desktop Gateway (RD Gateway) Denial of Service Vulnerability
CVSS v3.1
Score 6.2medium
Affected software
Weaknesses
AI-Powered Analysis
Machine-generated threat intelligence
Technical Analysis
This vulnerability involves a race condition in the Windows Remote Desktop Gateway on Windows 10 Version 1507 (build 10.0.10240.0). Improper synchronization when accessing shared resources can be exploited to cause a denial of service, impacting availability. The CVSS 3.1 base score is 6.2 (medium), with attack vector local, low attack complexity, no privileges required, no user interaction, and no confidentiality or integrity impact. Microsoft has released an official fix to address this issue.
Potential Impact
Successful exploitation results in denial of service, causing the Remote Desktop Gateway service to become unavailable. There is no impact on confidentiality or integrity. The attack requires local access but no privileges or user interaction.
Mitigation Recommendations
An official fix is available from Microsoft. Users should apply the security update referenced in the Microsoft advisory at https://msrc.microsoft.com/update-guide/vulnerability/CVE-2025-21278 to remediate this vulnerability.
Technical Details
- Data Version
- 5.1
- Assigner Short Name
- microsoft
- Date Reserved
- 2024-12-10T23:54:12.938Z
- Cvss Version
- 3.1
- State
- PUBLISHED
- Remediation Level
- official-fix
- Vendor Advisory Urls
- [{"url":"https://msrc.microsoft.com/update-guide/vulnerability/CVE-2025-21278","vendor":"Microsoft"}]
Threat ID: 68c0bd4f9ed239a66badeb29
Added to database: 09/09/2025, 23:50:39 UTC
Last enriched: 06/10/2026, 09:48:41 UTC
Last updated: 09/10/2026, 19:24:55 UTC
Views: 77
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