CVE-2026-54129: CWE-416: Use After Free in Microsoft Windows 10 Version 1809
CVE-2026-54129 is a use-after-free vulnerability in Windows Hyper-V on Windows 10 Version 1809 that allows an authorized local attacker to elevate privileges. The vulnerability has a high severity with a CVSS score of 7. An official fix is available from Microsoft.
AI Analysis
Technical Summary
This vulnerability (CVE-2026-54129) involves a use-after-free condition in the Windows Hyper-V component on Windows 10 Version 1809 (build 10.0.17763.0). Exploitation requires local authorized access and can lead to privilege escalation. The vulnerability has been assigned a CVSS 3.1 base score of 7.0, 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 use-after-free vulnerability in Windows Hyper-V to elevate their privileges, potentially gaining higher-level access on the affected system. This impacts confidentiality, integrity, and availability of the system.
Mitigation Recommendations
An official fix is available from Microsoft. Users and administrators should apply the security update provided by Microsoft for Windows 10 Version 1809 to remediate this vulnerability. Refer to the Microsoft advisory at https://msrc.microsoft.com/update-guide/vulnerability/CVE-2026-54129 for detailed update instructions.
CVE-2026-54129: CWE-416: Use After Free in Microsoft Windows 10 Version 1809
Description
CVE-2026-54129 is a use-after-free vulnerability in Windows Hyper-V on Windows 10 Version 1809 that allows an authorized local attacker to elevate privileges. The vulnerability has a high severity with a CVSS score of 7. An official fix is available from Microsoft.
CVSS v3.1
Score 7.0high
Affected software
Weaknesses
AI-Powered Analysis
Machine-generated threat intelligence
Technical Analysis
This vulnerability (CVE-2026-54129) involves a use-after-free condition in the Windows Hyper-V component on Windows 10 Version 1809 (build 10.0.17763.0). Exploitation requires local authorized access and can lead to privilege escalation. The vulnerability has been assigned a CVSS 3.1 base score of 7.0, 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 use-after-free vulnerability in Windows Hyper-V to elevate their privileges, potentially gaining higher-level access on the affected system. This impacts confidentiality, integrity, and availability of the system.
Mitigation Recommendations
An official fix is available from Microsoft. Users and administrators should apply the security update provided by Microsoft for Windows 10 Version 1809 to remediate this vulnerability. Refer to the Microsoft advisory at https://msrc.microsoft.com/update-guide/vulnerability/CVE-2026-54129 for detailed update instructions.
Technical Details
- Data Version
- 5.2
- Assigner Short Name
- microsoft
- Date Reserved
- 2026-06-11T20:33:37.837Z
- Cvss Version
- 3.1
- State
- PUBLISHED
- Remediation Level
- official-fix
- Vendor Advisory Urls
- [{"url":"https://msrc.microsoft.com/update-guide/vulnerability/CVE-2026-54129","vendor":"Microsoft"}]
Threat ID: 6a566f7d68715ace43e6bb91
Added to database: 07/14/2026, 17:18:53 UTC
Last enriched: 07/15/2026, 01:03:10 UTC
Last updated: 07/15/2026, 01:03:10 UTC
Views: 2
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