CVE-2026-80093: 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 locally.
CVSS v3.1
Score 7.0high
Affected software
Microsoft
Windows 10 Version 1809
Microsoft
Windows 10 Version 21H2
Microsoft
Windows 10 Version 22H2
Microsoft
Windows 11 version 23H2
Microsoft
Windows 11 Version 23H2
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, tracked as CVE-2026-80093, involves a use-after-free condition in the Windows Cloud Files Mini Filter Driver component of Microsoft Windows 10 Version 1809 and later. An authorized local attacker can exploit this flaw to elevate privileges on the affected system. The vulnerability is rated with a CVSS 3.1 score of 7.0, indicating high severity, with attack vector local, high attack complexity, low privileges required, no user interaction, and impacts on confidentiality, integrity, and availability. Microsoft has released an official fix addressing this issue.
Potential Impact
Successful exploitation allows an authorized local attacker to elevate privileges, potentially gaining higher system rights than intended. This can lead to full system compromise depending on the elevated privileges obtained. The vulnerability affects confidentiality, integrity, and availability of the system.
Mitigation Recommendations
Microsoft has provided an official fix for this vulnerability. Users and administrators should apply the available security updates as detailed in the Microsoft Security Response Center advisory at https://msrc.microsoft.com/update-guide/vulnerability/CVE-2026-80093 to remediate this issue.
Technical Details
- Data Version
- 5.2
- Assigner Short Name
- microsoft
- Date Reserved
- 2026-08-25T18:37:59.829Z
- Cvss Version
- 3.1
- State
- PUBLISHED
- Remediation Level
- official-fix
- Vendor Advisory Urls
- [{"url":"https://msrc.microsoft.com/update-guide/vulnerability/CVE-2026-80093","vendor":"Microsoft"}]
Threat ID: 6aa0456aacd9273b49facc4b
Added to database: 09/08/2026, 17:27:06 UTC
Last enriched: 10/14/2026, 22:05:28 UTC
Last updated: 10/23/2026, 15:12:05 UTC
Views: 39
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