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CVE-2025-21210: CWE-636: Not Failing Securely ('Failing Open') in Microsoft Windows 10 Version 1507

0
Medium
VulnerabilityCVE-2025-21210cvecve-2025-21210cwe-636
Published: 01/14/2025 (01/14/2025, 18:03:23 UTC)
Source: CVE Database V5
Vendor/Project: Microsoft
Product: Windows 10 Version 1507

Description

Windows BitLocker Information Disclosure Vulnerability

CVSS v3.1

Score 4.2medium

Attack Vector
Physical
Attack Complexity
High
Privileges Required
None
User Interaction
None
Scope
Unchanged
Confidentiality
High
Integrity
None
Availability
None
CVSS:3.1/AV:P/AC:H/PR:N/UI:N/S:U/C:H/I:N/A:N/E:U/RL:O/RC:C

Affected software

Affected versions
10.0.10240.0

AI-Powered Analysis

Machine-generated threat intelligence

AILast updated: 06/10/2026, 09:42:05 UTC

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.

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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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