Information Disclosure Vulnerability in Windows BitLocker by Microsoft
CVE-2025-21210

4.2MEDIUM

Key Information:

Vendor: Microsoft
Status: Windows 10 Version 1809; Windows Server 2019; Windows Server 2019 (server Core Installation); Windows Server 2022
Vendor: CVE Published:; 14 January 2025

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What is CVE-2025-21210?

CVE-2025-21210 refers to an information disclosure vulnerability found in Windows BitLocker, a crucial feature of the Microsoft Windows operating system designed to provide disk encryption and safeguard sensitive data. This vulnerability could enable unauthorized individuals to gain access to confidential information, posing a significant risk to organizations that rely on BitLocker for data protection. If exploited, it could potentially lead to data leaks or unauthorized data access, undermining the integrity and confidentiality of an organization’s sensitive information.

Technical Details

CVE-2025-21210 is characterized by its ability to expose sensitive information stored within systems that utilize Windows BitLocker encryption. The vulnerability presents a flaw in how data is managed by BitLocker, which may allow attackers to retrieve information that should otherwise be protected. Technical examination reveals that this issue arises from specific oversight in data handling and encryption processes, making it essential for organizations to address this vulnerability promptly.

Potential Impact of CVE-2025-21210

Data Breach Risk: The most immediate consequence of this vulnerability is the heightened risk of data breaches. Unauthorized access to sensitive information could lead to significant legal and financial repercussions for organizations.
Loss of Data Confidentiality: The vulnerability jeopardizes the fundamental aspect of data confidentiality that BitLocker is designed to protect. Organizations could face challenges in maintaining the privacy of their data, which can erode customer trust.
Regulatory Compliance Issues: Organizations may also encounter compliance challenges due to the potential exposure of sensitive information. This could result in penalties or other adverse consequences associated with not meeting industry regulations on data security.