CVE-2026-54127: CWE-416: Use After Free in Microsoft Windows 11 Version 24H2
CVE-2026-54127 is a use-after-free vulnerability in Windows Hyper-V on Microsoft Windows 11 Version 24H2. This vulnerability allows an unauthorized local attacker to elevate privileges. The issue has been assigned a high severity score of 7.4. An official fix is available from Microsoft to address this vulnerability.
AI Analysis
Technical Summary
CVE-2026-54127 is a use-after-free vulnerability (CWE-416) affecting Windows Hyper-V in Microsoft Windows 11 Version 24H2 (build 10.0.26100.0). This flaw enables a local attacker without privileges to elevate their privileges by exploiting improper memory handling in the Hyper-V component. The vulnerability has a CVSS v3.1 base score of 7.4, reflecting high impact on confidentiality, integrity, and availability. Microsoft has published an official fix to remediate this issue.
Potential Impact
Successful exploitation of this vulnerability allows an unauthorized local attacker to elevate privileges, potentially gaining higher-level access to the affected system. This can lead to full system compromise, including unauthorized access to sensitive data and system resources.
Mitigation Recommendations
An official fix is available from Microsoft. Users and administrators should apply the security update provided by Microsoft for Windows 11 Version 24H2 as soon as possible to remediate this vulnerability. Refer to the Microsoft Security Response Center advisory at https://msrc.microsoft.com/update-guide/vulnerability/CVE-2026-54127 for detailed patching instructions.
CVE-2026-54127: CWE-416: Use After Free in Microsoft Windows 11 Version 24H2
Description
CVE-2026-54127 is a use-after-free vulnerability in Windows Hyper-V on Microsoft Windows 11 Version 24H2. This vulnerability allows an unauthorized local attacker to elevate privileges. The issue has been assigned a high severity score of 7.4. An official fix is available from Microsoft to address this vulnerability.
CVSS v3.1
Score 7.4high
Affected software
Weaknesses
AI-Powered Analysis
Machine-generated threat intelligence
Technical Analysis
CVE-2026-54127 is a use-after-free vulnerability (CWE-416) affecting Windows Hyper-V in Microsoft Windows 11 Version 24H2 (build 10.0.26100.0). This flaw enables a local attacker without privileges to elevate their privileges by exploiting improper memory handling in the Hyper-V component. The vulnerability has a CVSS v3.1 base score of 7.4, reflecting high impact on confidentiality, integrity, and availability. Microsoft has published an official fix to remediate this issue.
Potential Impact
Successful exploitation of this vulnerability allows an unauthorized local attacker to elevate privileges, potentially gaining higher-level access to the affected system. This can lead to full system compromise, including unauthorized access to sensitive data and system resources.
Mitigation Recommendations
An official fix is available from Microsoft. Users and administrators should apply the security update provided by Microsoft for Windows 11 Version 24H2 as soon as possible to remediate this vulnerability. Refer to the Microsoft Security Response Center advisory at https://msrc.microsoft.com/update-guide/vulnerability/CVE-2026-54127 for detailed patching 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-2026-54127","vendor":"Microsoft"}]
Threat ID: 6a566f7d68715ace43e6bb8e
Added to database: 07/14/2026, 17:18:53 UTC
Last enriched: 07/15/2026, 01:03:36 UTC
Last updated: 07/15/2026, 01:03:36 UTC
Views: 3
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