CVE-2025-21274: CWE-59: Improper Link Resolution Before File Access ('Link Following') in Microsoft Windows 10 Version 1507
Windows Event Tracing Denial of Service Vulnerability
AI Analysis
Technical Summary
This vulnerability, identified as CWE-59 (Improper Link Resolution Before File Access), affects Windows 10 Version 1507 (build 10.0.10240.0). It involves the Windows Event Tracing functionality improperly handling symbolic links or similar link types before accessing files, which can be exploited to cause a denial of service. The CVSS v3.1 base score is 5.5 (medium severity), with an attack vector requiring local access and low privileges, no user interaction needed, and resulting in an availability impact only. Microsoft has published an official fix for this vulnerability.
Potential Impact
Exploitation of this vulnerability can cause denial of service by disrupting Windows Event Tracing operations. There is no impact on confidentiality or integrity. The attack requires local access with low privileges and does not require user interaction.
Mitigation Recommendations
An official fix is available from Microsoft. Users and administrators should apply the security update provided in the Microsoft advisory at https://msrc.microsoft.com/update-guide/vulnerability/CVE-2025-21274 to remediate this vulnerability.
CVE-2025-21274: CWE-59: Improper Link Resolution Before File Access ('Link Following') in Microsoft Windows 10 Version 1507
Description
Windows Event Tracing Denial of Service Vulnerability
CVSS v3.1
Score 5.5medium
Affected software
Weaknesses
AI-Powered Analysis
Machine-generated threat intelligence
Technical Analysis
This vulnerability, identified as CWE-59 (Improper Link Resolution Before File Access), affects Windows 10 Version 1507 (build 10.0.10240.0). It involves the Windows Event Tracing functionality improperly handling symbolic links or similar link types before accessing files, which can be exploited to cause a denial of service. The CVSS v3.1 base score is 5.5 (medium severity), with an attack vector requiring local access and low privileges, no user interaction needed, and resulting in an availability impact only. Microsoft has published an official fix for this vulnerability.
Potential Impact
Exploitation of this vulnerability can cause denial of service by disrupting Windows Event Tracing operations. There is no impact on confidentiality or integrity. The attack requires local access with low privileges and does not require user interaction.
Mitigation Recommendations
An official fix is available from Microsoft. Users and administrators should apply the security update provided in the Microsoft advisory at https://msrc.microsoft.com/update-guide/vulnerability/CVE-2025-21274 to remediate this vulnerability.
Technical Details
- Data Version
- 5.1
- Assigner Short Name
- microsoft
- Date Reserved
- 2024-12-10T23:54:12.936Z
- Cvss Version
- 3.1
- State
- PUBLISHED
- Remediation Level
- official-fix
- Vendor Advisory Urls
- [{"url":"https://msrc.microsoft.com/update-guide/vulnerability/CVE-2025-21274","vendor":"Microsoft"}]
Threat ID: 68c0bd4f9ed239a66badeb1d
Added to database: 09/09/2025, 23:50:39 UTC
Last enriched: 06/10/2026, 09:48:21 UTC
Last updated: 09/10/2026, 19:36:49 UTC
Views: 97
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