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
CVE-2026-44809 is a use-after-free vulnerability (CWE-416) in the Windows Common Log File System Driver on Windows 11 Version 24H2 (build 10.0.26100.0). This flaw enables an authorized local attacker to elevate privileges by exploiting improper memory handling. The vulnerability has been assigned a CVSS v3.1 base score of 7.8, indicating high impact on confidentiality, integrity, and availability. Microsoft has released an official fix to address this issue.
Potential Impact
Successful exploitation of this vulnerability allows an authorized local attacker to elevate their privileges on the affected system, potentially gaining higher-level access than intended. This can lead to full system compromise, affecting confidentiality, integrity, and availability of the system.
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
Weaknesses
AI-Powered Analysis
Machine-generated threat intelligence
Technical Analysis
CVE-2026-44809 is a use-after-free vulnerability (CWE-416) in the Windows Common Log File System Driver on Windows 11 Version 24H2 (build 10.0.26100.0). This flaw enables an authorized local attacker to elevate privileges by exploiting improper memory handling. The vulnerability has been assigned a CVSS v3.1 base score of 7.8, indicating high impact on confidentiality, integrity, and availability. Microsoft has released an official fix to address this issue.
Potential Impact
Successful exploitation of this vulnerability allows an authorized local attacker to elevate their privileges on the affected system, potentially gaining higher-level access than intended. This can lead to full system compromise, affecting confidentiality, integrity, and availability of the system.
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: 07/29/2026, 21:52:19 UTC
Last updated: 07/31/2026, 20:41:17 UTC
Views: 74
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