CVE-2026-34337: CWE-416: Use After Free in Microsoft Windows 10 Version 1809
Use after free in Windows Cloud Files Mini Filter Driver allows an authorized attacker to elevate privileges locally.
AI Analysis
Technical Summary
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). An authorized attacker with local access can exploit this flaw to elevate their privileges, potentially gaining higher-level system permissions. The issue is tracked as CVE-2026-34337 and is classified under CWE-416 (Use After Free). Microsoft has published an official security update to remediate this vulnerability.
Potential Impact
Successful exploitation of this vulnerability allows an authorized local attacker to elevate their privileges, potentially leading to full control over the affected system. The confidentiality, integrity, and availability of the system can be fully compromised. There are currently no reports of active exploitation in the wild.
Mitigation Recommendations
Microsoft has released an official fix for this vulnerability. It is strongly recommended to apply the security update provided by Microsoft for Windows 10 Version 1809 to remediate this issue. No additional mitigation steps are indicated by the vendor advisory.
CVE-2026-34337: 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.
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). An authorized attacker with local access can exploit this flaw to elevate their privileges, potentially gaining higher-level system permissions. The issue is tracked as CVE-2026-34337 and is classified under CWE-416 (Use After Free). Microsoft has published an official security update to remediate this vulnerability.
Potential Impact
Successful exploitation of this vulnerability allows an authorized local attacker to elevate their privileges, potentially leading to full control over the affected system. The confidentiality, integrity, and availability of the system can be fully compromised. There are currently no reports of active exploitation in the wild.
Mitigation Recommendations
Microsoft has released an official fix for this vulnerability. It is strongly recommended to apply the security update provided by Microsoft for Windows 10 Version 1809 to remediate this issue. No additional mitigation steps are indicated by the vendor advisory.
Technical Details
- Data Version
- 5.2
- Assigner Short Name
- microsoft
- Date Reserved
- 2026-03-26T21:02:16.446Z
- Cvss Version
- 3.1
- State
- PUBLISHED
- Remediation Level
- official-fix
- Vendor Advisory Urls
- [{"url":"https://msrc.microsoft.com/update-guide/vulnerability/CVE-2026-34337","vendor":"Microsoft"}]
Threat ID: 6a03653ccbff5d861008c3eb
Added to database: 5/12/2026, 5:37:00 PM
Last enriched: 5/12/2026, 7:23:19 PM
Last updated: 5/13/2026, 4:52:18 AM
Views: 2
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