CVE-2026-45637: CWE-416: Use After Free in Microsoft Windows 10 Version 1809
Use after free in Windows DWM Core Library allows an authorized attacker to elevate privileges locally.
AI Analysis
Technical Summary
CVE-2026-45637 is a use-after-free vulnerability (CWE-416) in the Windows Desktop Window Manager (DWM) Core Library on Windows 10 Version 1809 (build 10.0.17763.0). The flaw allows an attacker with local authorized access to elevate their privileges on the affected system. The vulnerability has a CVSS v3.1 base score of 7.8, indicating high severity, with impact on confidentiality, integrity, and availability. Microsoft has released an official fix for this vulnerability as documented in their security update guide.
Potential Impact
An authorized local attacker can exploit this use-after-free vulnerability to elevate privileges, potentially gaining higher system rights than intended. This can lead to full system compromise, including unauthorized access to sensitive data and disruption of system availability.
Mitigation Recommendations
An official fix is available from Microsoft. It is recommended to apply the security update provided in the Microsoft advisory at https://msrc.microsoft.com/update-guide/vulnerability/CVE-2026-45637 to remediate this vulnerability.
CVE-2026-45637: CWE-416: Use After Free in Microsoft Windows 10 Version 1809
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
Weaknesses
AI-Powered Analysis
Machine-generated threat intelligence
Technical Analysis
CVE-2026-45637 is a use-after-free vulnerability (CWE-416) in the Windows Desktop Window Manager (DWM) Core Library on Windows 10 Version 1809 (build 10.0.17763.0). The flaw allows an attacker with local authorized access to elevate their privileges on the affected system. The vulnerability has a CVSS v3.1 base score of 7.8, indicating high severity, with impact on confidentiality, integrity, and availability. Microsoft has released an official fix for this vulnerability as documented in their security update guide.
Potential Impact
An authorized local attacker can exploit this use-after-free vulnerability to elevate privileges, potentially gaining higher system rights than intended. This can lead to full system compromise, including unauthorized access to sensitive data and disruption of system availability.
Mitigation Recommendations
An official fix is available from Microsoft. It is recommended to apply the security update provided in the Microsoft advisory at https://msrc.microsoft.com/update-guide/vulnerability/CVE-2026-45637 to remediate this vulnerability.
Technical Details
- Data Version
- 5.2
- Assigner Short Name
- microsoft
- Date Reserved
- 2026-05-12T20:33:35.155Z
- Cvss Version
- 3.1
- State
- PUBLISHED
- Remediation Level
- official-fix
- Vendor Advisory Urls
- [{"url":"https://msrc.microsoft.com/update-guide/vulnerability/CVE-2026-45637","vendor":"Microsoft"}]
Threat ID: 6a284ce78dd33fbd85664ec6
Added to database: 06/09/2026, 17:27:03 UTC
Last enriched: 07/29/2026, 22:01:18 UTC
Last updated: 07/31/2026, 21:26:44 UTC
Views: 60
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