CVE-2026-50374: CWE-416: Use After Free in Microsoft Windows 10 Version 1809
Description
Use after free in Windows Cloud Files Mini Filter Driver allows an authorized attacker to elevate privileges with a physical attack.
CVSS v3.1
Score 6.3medium
Affected software
Microsoft
Windows 10 Version 1809
Microsoft
Windows 10 Version 21H2
Microsoft
Windows 10 Version 22H2
Microsoft
Windows 11 Version 24H2
Microsoft
Windows 11 Version 25H2
Microsoft
Windows 11 version 26H1
Microsoft
Windows Server 2019
Microsoft
Windows Server 2019 (Server Core installation)
Microsoft
Windows Server 2022
Microsoft
Windows Server 2025
Microsoft
Windows Server 2025 (Server Core installation)
Weaknesses
AI-Powered Analysis
Machine-generated threat intelligence
Technical Analysis
This vulnerability involves a use-after-free condition in the Windows Cloud Files Mini Filter Driver component of Windows 10 Version 1809 (build 10.0.17763.0). Exploitation requires physical access and an authorized user context, enabling privilege escalation. The vulnerability is tracked as CWE-416. Microsoft has released an official patch to remediate this issue.
Potential Impact
Successful exploitation allows an authorized attacker with physical access to elevate privileges on the affected system, potentially gaining higher-level control. The vulnerability affects confidentiality, integrity, and availability as indicated by the CVSS vector (C:H/I:H/A:H). 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 security update provided by Microsoft for Windows 10 Version 1809 (build 10.0.17763.0) as detailed in the Microsoft advisory: https://msrc.microsoft.com/update-guide/vulnerability/CVE-2026-50374. No additional mitigation steps are indicated by the vendor.
Technical Details
- Data Version
- 5.2
- Assigner Short Name
- microsoft
- Date Reserved
- 2026-06-04T18:55:14.744Z
- Cvss Version
- 3.1
- State
- PUBLISHED
- Remediation Level
- official-fix
- Vendor Advisory Urls
- [{"url":"https://msrc.microsoft.com/update-guide/vulnerability/CVE-2026-50374","vendor":"Microsoft"}]
Threat ID: 6a56769668715ace43f08e15
Added to database: 07/14/2026, 17:49:10 UTC
Last enriched: 08/13/2026, 14:42:44 UTC
Last updated: 10/12/2026, 18:57:58 UTC
Views: 91
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