CVE-2026-44809: CWE-416: Use After Free in Microsoft Windows 11 Version 24H2
Use after free in Windows Common Log File System Driver allows an authorized attacker to elevate privileges locally.
AI Analysis
Technical Summary
This vulnerability (CVE-2026-44809) involves a use-after-free condition in the Windows Common Log File System Driver on Windows 11 Version 24H2 (build 10.0.26100.0). An authorized attacker with local access can exploit this flaw to elevate privileges, potentially gaining higher system rights. The issue is classified under CWE-416 (Use After Free). Microsoft has released an official fix to address this vulnerability.
Potential Impact
Successful exploitation of this vulnerability allows an authorized local attacker to elevate their privileges, potentially gaining administrative control or performing actions beyond their original permissions. This can lead to full system compromise if combined with other attack vectors.
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-2026-44809 to remediate this vulnerability.
CVE-2026-44809: CWE-416: Use After Free in Microsoft Windows 11 Version 24H2
Description
Use after free in Windows Common Log File System Driver allows an authorized attacker to elevate privileges locally.
CVSS v3.1
Score 7.8high
Affected software
Microsoft
Windows 11 Version 24H2
Microsoft
Windows 11 Version 25H2
Microsoft
Windows 11 version 26H1
Microsoft
Windows Server 2025
Microsoft
Windows Server 2025 (Server Core installation)
Weaknesses
AI-Powered Analysis
Machine-generated threat intelligence
Technical Analysis
This vulnerability (CVE-2026-44809) involves a use-after-free condition in the Windows Common Log File System Driver on Windows 11 Version 24H2 (build 10.0.26100.0). An authorized attacker with local access can exploit this flaw to elevate privileges, potentially gaining higher system rights. The issue is classified under CWE-416 (Use After Free). Microsoft has released an official fix to address this vulnerability.
Potential Impact
Successful exploitation of this vulnerability allows an authorized local attacker to elevate their privileges, potentially gaining administrative control or performing actions beyond their original permissions. This can lead to full system compromise if combined with other attack vectors.
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-2026-44809 to remediate this vulnerability.
Technical Details
- Data Version
- 5.2
- Assigner Short Name
- microsoft
- Date Reserved
- 2026-05-07T20:07:18.271Z
- Cvss Version
- 3.1
- State
- PUBLISHED
- Remediation Level
- official-fix
- Vendor Advisory Urls
- [{"url":"https://msrc.microsoft.com/update-guide/vulnerability/CVE-2026-44809","vendor":"Microsoft"}]
Threat ID: 6a284cce8dd33fbd85664a0f
Added to database: 06/09/2026, 17:26:38 UTC
Last enriched: 08/14/2026, 13:26:16 UTC
Last updated: 09/10/2026, 20:47:01 UTC
Views: 89
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