CVE-2025-21370: CWE-20: Improper Input Validation in Microsoft Windows 11 version 22H2
Windows Virtualization-Based Security (VBS) Enclave Elevation of Privilege Vulnerability
AI Analysis
Technical Summary
This vulnerability involves improper input validation in the Windows Virtualization-Based Security (VBS) enclave component of Microsoft Windows 11 version 22H2 (build 10.0.22621.0). An attacker with low privileges could potentially exploit this flaw to elevate their privileges on the affected system. The CVSS v3.1 base score is 7.8, reflecting high impact on confidentiality, integrity, and availability. Microsoft has published an official fix to address this issue.
Potential Impact
Successful exploitation could allow an attacker with limited privileges to elevate their privileges within the Windows 11 22H2 environment, potentially gaining higher-level access to system resources protected by the VBS enclave. This could lead to full compromise of the affected system's confidentiality, integrity, and availability.
Mitigation Recommendations
An official fix is available from Microsoft. Users and administrators should apply the security update provided by Microsoft as soon as possible to remediate this vulnerability. Refer to the Microsoft advisory at https://msrc.microsoft.com/update-guide/vulnerability/CVE-2025-21370 for detailed patch information and update instructions.
CVE-2025-21370: CWE-20: Improper Input Validation in Microsoft Windows 11 version 22H2
Description
Windows Virtualization-Based Security (VBS) Enclave Elevation of Privilege Vulnerability
CVSS v3.1
Score 7.8high
Affected software
Weaknesses
AI-Powered Analysis
Machine-generated threat intelligence
Technical Analysis
This vulnerability involves improper input validation in the Windows Virtualization-Based Security (VBS) enclave component of Microsoft Windows 11 version 22H2 (build 10.0.22621.0). An attacker with low privileges could potentially exploit this flaw to elevate their privileges on the affected system. The CVSS v3.1 base score is 7.8, reflecting high impact on confidentiality, integrity, and availability. Microsoft has published an official fix to address this issue.
Potential Impact
Successful exploitation could allow an attacker with limited privileges to elevate their privileges within the Windows 11 22H2 environment, potentially gaining higher-level access to system resources protected by the VBS enclave. This could lead to full compromise of the affected system's confidentiality, integrity, and availability.
Mitigation Recommendations
An official fix is available from Microsoft. Users and administrators should apply the security update provided by Microsoft as soon as possible to remediate this vulnerability. Refer to the Microsoft advisory at https://msrc.microsoft.com/update-guide/vulnerability/CVE-2025-21370 for detailed patch information and update instructions.
Technical Details
- Data Version
- 5.1
- Assigner Short Name
- microsoft
- Date Reserved
- 2024-12-11T00:29:48.361Z
- Cvss Version
- 3.1
- State
- PUBLISHED
- Remediation Level
- official-fix
- Vendor Advisory Urls
- [{"url":"https://msrc.microsoft.com/update-guide/vulnerability/CVE-2025-21370","vendor":"Microsoft"}]
Threat ID: 68c0bd539ed239a66badec3e
Added to database: 09/09/2025, 23:50:43 UTC
Last enriched: 06/10/2026, 09:59:13 UTC
Last updated: 07/08/2026, 10:28:16 UTC
Views: 276
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