CVE-2026-42983: CWE-416: Use After Free in Microsoft Windows 10 Version 1809
CVE-2026-42983 is a use-after-free vulnerability in the Windows DWM Core Library affecting Windows 10 Version 1809 (build 10. 0. 17763. 0). This flaw allows an authorized local attacker to elevate privileges. The vulnerability has a high severity with a CVSS score of 7. 8. An official fix is available from Microsoft.
AI Analysis
Technical Summary
This vulnerability (CVE-2026-42983) involves a use-after-free condition in the Windows Desktop Window Manager (DWM) Core Library on Windows 10 Version 1809 (build 10.0.17763.0). Exploitation requires local access with some privileges and does not require user interaction. Successful exploitation could lead to elevation of privileges, impacting confidentiality, integrity, and availability. Microsoft has published an official fix to address this issue.
Potential Impact
An authorized local attacker could exploit this use-after-free vulnerability to elevate their privileges on the affected system. This could result in full control over the system, compromising confidentiality, integrity, and availability of data and system resources.
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-2026-42983 to remediate this vulnerability.
CVE-2026-42983: CWE-416: Use After Free in Microsoft Windows 10 Version 1809
Description
CVE-2026-42983 is a use-after-free vulnerability in the Windows DWM Core Library affecting Windows 10 Version 1809 (build 10. 0. 17763. 0). This flaw allows an authorized local attacker to elevate privileges. The vulnerability has a high severity with a CVSS score of 7. 8. An official fix is available from Microsoft.
CVSS v3.1
Score 7.8high
Weaknesses
AI-Powered Analysis
Machine-generated threat intelligence
Technical Analysis
This vulnerability (CVE-2026-42983) involves a use-after-free condition in the Windows Desktop Window Manager (DWM) Core Library on Windows 10 Version 1809 (build 10.0.17763.0). Exploitation requires local access with some privileges and does not require user interaction. Successful exploitation could lead to elevation of privileges, impacting confidentiality, integrity, and availability. Microsoft has published an official fix to address this issue.
Potential Impact
An authorized local attacker could exploit this use-after-free vulnerability to elevate their privileges on the affected system. This could result in full control over the system, compromising confidentiality, integrity, and availability of data and system resources.
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-2026-42983 to remediate this vulnerability.
Technical Details
- Data Version
- 5.2
- Assigner Short Name
- microsoft
- Date Reserved
- 2026-04-30T23:43:50.745Z
- Cvss Version
- 3.1
- State
- PUBLISHED
- Remediation Level
- official-fix
- Vendor Advisory Urls
- [{"url":"https://msrc.microsoft.com/update-guide/vulnerability/CVE-2026-42983","vendor":"Microsoft"}]
Threat ID: 6a284ccb8dd33fbd8566494e
Added to database: 6/9/2026, 5:26:35 PM
Last enriched: 6/9/2026, 10:56:21 PM
Last updated: 6/10/2026, 4:56:30 AM
Views: 2
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