CVE-2026-44804: CWE-416: Use After Free in Microsoft Windows 11 version 26H1
Use after free in Windows DWM Core Library allows an authorized attacker to elevate privileges locally.
AI Analysis
Technical Summary
This vulnerability, identified as CWE-416 (Use After Free), exists in the Windows DWM Core Library component of Microsoft Windows 11 version 26H1 (build 10.0.28000.0). It allows a local attacker with authorized access to execute code that elevates their privileges by exploiting a use-after-free condition. The vulnerability has been assigned CVE-2026-44804 and carries 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
An authorized local attacker can exploit this vulnerability to elevate their privileges on the affected system. This could lead to full system compromise, including unauthorized access to sensitive data and control over system resources. The CVSS vector indicates high impact on confidentiality, integrity, and availability, with low attack complexity and no user interaction required.
Mitigation Recommendations
Microsoft has released an official fix for this vulnerability. It is recommended to apply the security update provided by Microsoft for Windows 11 version 26H1 (build 10.0.28000.0) as soon as possible to remediate this issue. No additional mitigation steps are required beyond applying the official patch.
CVE-2026-44804: CWE-416: Use After Free in Microsoft Windows 11 version 26H1
Description
Use after free in Windows DWM Core Library allows an authorized attacker to elevate privileges locally.
CVSS v3.1
Score 7.8high
Affected software
Microsoft
Windows 11 version 26H1
Weaknesses
AI-Powered Analysis
Machine-generated threat intelligence
Technical Analysis
This vulnerability, identified as CWE-416 (Use After Free), exists in the Windows DWM Core Library component of Microsoft Windows 11 version 26H1 (build 10.0.28000.0). It allows a local attacker with authorized access to execute code that elevates their privileges by exploiting a use-after-free condition. The vulnerability has been assigned CVE-2026-44804 and carries 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
An authorized local attacker can exploit this vulnerability to elevate their privileges on the affected system. This could lead to full system compromise, including unauthorized access to sensitive data and control over system resources. The CVSS vector indicates high impact on confidentiality, integrity, and availability, with low attack complexity and no user interaction required.
Mitigation Recommendations
Microsoft has released an official fix for this vulnerability. It is recommended to apply the security update provided by Microsoft for Windows 11 version 26H1 (build 10.0.28000.0) as soon as possible to remediate this issue. No additional mitigation steps are required beyond applying the official patch.
Technical Details
- Data Version
- 5.2
- Assigner Short Name
- microsoft
- Date Reserved
- 2026-05-07T20:07:18.270Z
- Cvss Version
- 3.1
- State
- PUBLISHED
- Remediation Level
- official-fix
- Vendor Advisory Urls
- [{"url":"https://msrc.microsoft.com/update-guide/vulnerability/CVE-2026-44804","vendor":"Microsoft"}]
Threat ID: 6a284cce8dd33fbd85664a03
Added to database: 06/09/2026, 17:26:38 UTC
Last enriched: 08/14/2026, 13:25:41 UTC
Last updated: 09/13/2026, 22:01:34 UTC
Views: 111
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