CVE-2026-42905: CWE-416: Use After Free in Microsoft Windows 10 Version 1607
CVE-2026-42905 is a use-after-free vulnerability in the Windows DWM Core Library affecting Windows 10 Version 1607 (build 10. 0. 14393. 0). This flaw allows an authorized local attacker to elevate privileges. The vulnerability has a high severity score of 7. 8 and has an official fix available from Microsoft.
AI Analysis
Technical Summary
This vulnerability (CVE-2026-42905) involves a use-after-free condition in the Windows Desktop Window Manager (DWM) Core Library on Windows 10 Version 1607. An authorized attacker with local access can exploit this flaw to elevate their privileges on the affected system. The issue is tracked under CWE-416 (Use After Free). Microsoft has published an official fix to address this vulnerability.
Potential Impact
Successful exploitation of this vulnerability allows an authorized local attacker to elevate privileges, potentially gaining higher-level access than intended. The CVSS v3.1 base score is 7.8, indicating high impact on confidentiality, integrity, and availability. There are no known exploits in the wild at this time.
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-2026-42905 to remediate this vulnerability.
CVE-2026-42905: CWE-416: Use After Free in Microsoft Windows 10 Version 1607
Description
CVE-2026-42905 is a use-after-free vulnerability in the Windows DWM Core Library affecting Windows 10 Version 1607 (build 10. 0. 14393. 0). This flaw allows an authorized local attacker to elevate privileges. The vulnerability has a high severity score of 7. 8 and has an official fix available from Microsoft.
CVSS v3.1
Score 7.8high
Weaknesses
AI-Powered Analysis
Machine-generated threat intelligence
Technical Analysis
This vulnerability (CVE-2026-42905) involves a use-after-free condition in the Windows Desktop Window Manager (DWM) Core Library on Windows 10 Version 1607. An authorized attacker with local access can exploit this flaw to elevate their privileges on the affected system. The issue is tracked under CWE-416 (Use After Free). Microsoft has published an official fix to address this vulnerability.
Potential Impact
Successful exploitation of this vulnerability allows an authorized local attacker to elevate privileges, potentially gaining higher-level access than intended. The CVSS v3.1 base score is 7.8, indicating high impact on confidentiality, integrity, and availability. There are no known exploits in the wild at this time.
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-2026-42905 to remediate this vulnerability.
Technical Details
- Data Version
- 5.2
- Assigner Short Name
- microsoft
- Date Reserved
- 2026-04-30T22:35:54.968Z
- Cvss Version
- 3.1
- State
- PUBLISHED
- Remediation Level
- official-fix
- Vendor Advisory Urls
- [{"url":"https://msrc.microsoft.com/update-guide/vulnerability/CVE-2026-42905","vendor":"Microsoft"}]
Threat ID: 6a284cc08dd33fbd856646e2
Added to database: 6/9/2026, 5:26:24 PM
Last enriched: 6/9/2026, 11:12:07 PM
Last updated: 6/10/2026, 4:56:54 AM
Views: 5
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