CVE-2026-54114: CWE-416: Use After Free in Microsoft Windows 10 Version 1809
Use after free in Windows Win32K allows an authorized attacker to elevate privileges locally.
AI Analysis
Technical Summary
This vulnerability (CVE-2026-54114) involves a use-after-free condition in the Windows Win32K subsystem 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, allowing an attacker to gain higher-level permissions on the system. Microsoft has published an official fix to remediate this vulnerability.
Potential Impact
An authorized local attacker can exploit this use-after-free vulnerability to elevate their privileges, potentially gaining administrative rights. This could allow the attacker to execute arbitrary code with elevated permissions, compromising system integrity and confidentiality.
Mitigation Recommendations
An official fix is available from Microsoft. Users and administrators should apply the patch provided in the Microsoft security update referenced at https://msrc.microsoft.com/update-guide/vulnerability/CVE-2026-54114 to remediate this vulnerability.
CVE-2026-54114: CWE-416: Use After Free in Microsoft Windows 10 Version 1809
Description
Use after free in Windows Win32K 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
This vulnerability (CVE-2026-54114) involves a use-after-free condition in the Windows Win32K subsystem 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, allowing an attacker to gain higher-level permissions on the system. Microsoft has published an official fix to remediate this vulnerability.
Potential Impact
An authorized local attacker can exploit this use-after-free vulnerability to elevate their privileges, potentially gaining administrative rights. This could allow the attacker to execute arbitrary code with elevated permissions, compromising system integrity and confidentiality.
Mitigation Recommendations
An official fix is available from Microsoft. Users and administrators should apply the patch provided in the Microsoft security update referenced at https://msrc.microsoft.com/update-guide/vulnerability/CVE-2026-54114 to remediate this vulnerability.
Technical Details
- Data Version
- 5.2
- Assigner Short Name
- microsoft
- Date Reserved
- 2026-06-11T20:33:37.835Z
- Cvss Version
- 3.1
- State
- PUBLISHED
- Remediation Level
- official-fix
- Vendor Advisory Urls
- [{"url":"https://msrc.microsoft.com/update-guide/vulnerability/CVE-2026-54114","vendor":"Microsoft"}]
Threat ID: 6a566f7b68715ace43e6bae7
Added to database: 07/14/2026, 17:18:51 UTC
Last enriched: 08/13/2026, 15:20:53 UTC
Last updated: 08/26/2026, 22:52:11 UTC
Views: 53
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