CVE-2025-21210: CWE-636: Not Failing Securely ('Failing Open') in Microsoft Windows 10 Version 1507
Windows BitLocker Information Disclosure Vulnerability
AI Analysis
Technical Summary
This vulnerability, identified as CVE-2025-21210, affects Microsoft Windows 10 Version 1507 (build 10.0.10240.0) and is categorized under CWE-636, which involves not failing securely ('failing open'). The issue concerns Windows BitLocker and may lead to information disclosure. The CVSS v3.1 base score is 4.2, reflecting a medium severity with attack vector requiring physical presence, high attack complexity, no privileges required, and no user interaction. Microsoft has published an official fix for this vulnerability as detailed in their security update guide.
Potential Impact
The vulnerability could allow information disclosure related to BitLocker on affected Windows 10 Version 1507 systems. The CVSS vector indicates that exploitation requires physical access and has high complexity, with no privileges or user interaction needed. There is no impact on integrity or availability. No known exploits are reported in the wild.
Mitigation Recommendations
An official fix is available from Microsoft. Users and administrators should apply the security update provided by Microsoft to remediate this vulnerability. Refer to the Microsoft advisory at https://msrc.microsoft.com/update-guide/vulnerability/CVE-2025-21210 for the patch and update instructions.
CVE-2025-21210: CWE-636: Not Failing Securely ('Failing Open') in Microsoft Windows 10 Version 1507
Description
Windows BitLocker Information Disclosure Vulnerability
CVSS v3.1
Score 4.2medium
Affected software
Weaknesses
AI-Powered Analysis
Machine-generated threat intelligence
Technical Analysis
This vulnerability, identified as CVE-2025-21210, affects Microsoft Windows 10 Version 1507 (build 10.0.10240.0) and is categorized under CWE-636, which involves not failing securely ('failing open'). The issue concerns Windows BitLocker and may lead to information disclosure. The CVSS v3.1 base score is 4.2, reflecting a medium severity with attack vector requiring physical presence, high attack complexity, no privileges required, and no user interaction. Microsoft has published an official fix for this vulnerability as detailed in their security update guide.
Potential Impact
The vulnerability could allow information disclosure related to BitLocker on affected Windows 10 Version 1507 systems. The CVSS vector indicates that exploitation requires physical access and has high complexity, with no privileges or user interaction needed. There is no impact on integrity or availability. No known exploits are reported in the wild.
Mitigation Recommendations
An official fix is available from Microsoft. Users and administrators should apply the security update provided by Microsoft to remediate this vulnerability. Refer to the Microsoft advisory at https://msrc.microsoft.com/update-guide/vulnerability/CVE-2025-21210 for the patch and update instructions.
Technical Details
- Data Version
- 5.1
- Assigner Short Name
- microsoft
- Date Reserved
- 2024-12-05T21:43:30.769Z
- Cvss Version
- 3.1
- State
- PUBLISHED
- Remediation Level
- official-fix
- Vendor Advisory Urls
- [{"url":"https://msrc.microsoft.com/update-guide/vulnerability/CVE-2025-21210","vendor":"Microsoft"}]
Threat ID: 68c0bd4c9ed239a66badea55
Added to database: 09/09/2025, 23:50:36 UTC
Last enriched: 06/10/2026, 09:42:05 UTC
Last updated: 09/10/2026, 19:36:49 UTC
Views: 165
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