Microsoft Windows up to Server 2025 BitLocker failing open

CVSS Meta Temp Score
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Current Exploit Price (≈)
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CTI Interest Score
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3.7$0-$5k0.00

Summaryinfo

A vulnerability was found in Microsoft Windows. It has been declared as problematic. This vulnerability affects unknown code of the component BitLocker. Such manipulation leads to failing open. This vulnerability is listed as CVE-2025-21210. The attack can be executed directly on the physical device. There is no available exploit. It is advisable to implement a patch to correct this issue.

Detailsinfo

A vulnerability was found in Microsoft Windows and classified as problematic. Affected by this issue is some unknown processing of the component BitLocker. The manipulation with an unknown input leads to a failing open vulnerability. Using CWE to declare the problem leads to CWE-636. When the product encounters an error condition or failure, its design requires it to fall back to a state that is less secure than other options that are available, such as selecting the weakest encryption algorithm or using the most permissive access control restrictions. Impacted is confidentiality.

The weakness was presented 01/14/2025 as confirmed security update guide (Website). The advisory is shared for download at msrc.microsoft.com. This vulnerability is handled as CVE-2025-21210. The exploitation is known to be difficult. The attack needs to be approached locally. No form of authentication is required for exploitation. There are neither technical details nor an exploit publicly available.

The vulnerability scanner Nessus provides a plugin with the ID 214136 (KB5049984: Windows 11 version 22H2 / Windows Server version 23H2 Security Update (January 2025)), which helps to determine the existence of the flaw in a target environment.

Applying a patch is able to eliminate this problem. A possible mitigation has been published immediately after the disclosure of the vulnerability.

The vulnerability is also documented in the vulnerability database at Tenable (214136). Once again VulDB remains the best source for vulnerability data.

Productinfo

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Vendor

Name

Version

License

Website

CPE 2.3info

CPE 2.2info

CVSSv4info

VulDB Vector: 🔍
VulDB Reliability: 🔍

CVSSv3info

VulDB Meta Base Score: 4.2
VulDB Meta Temp Score: 3.7

VulDB Base Score: 4.2
VulDB Temp Score: 3.7
VulDB Vector: 🔍
VulDB Reliability: 🔍

Vendor Base Score (Microsoft): 4.2
Vendor Vector (Microsoft): 🔍

CVSSv2info

AVACAuCIA
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VectorComplexityAuthenticationConfidentialityIntegrityAvailability
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VulDB Base Score: 🔍
VulDB Temp Score: 🔍
VulDB Reliability: 🔍

Exploitinginfo

Class: Failing open
CWE: CWE-636
CAPEC: 🔍
ATT&CK: 🔍

Physical: Yes
Local: Yes
Remote: No

Availability: 🔍
Status: Unproven

EPSS Score: 🔍
EPSS Percentile: 🔍

Price Prediction: 🔍
Current Price Estimation: 🔍

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Nessus ID: 214136
Nessus Name: KB5049984: Windows 11 version 22H2 / Windows Server version 23H2 Security Update (January 2025)

Threat Intelligenceinfo

Interest: 🔍
Active Actors: 🔍
Active APT Groups: 🔍

Countermeasuresinfo

Recommended: Patch
Status: 🔍

Reaction Time: 🔍
0-Day Time: 🔍
Exposure Time: 🔍

Timelineinfo

01/14/2025 🔍
01/14/2025 +0 days 🔍
01/14/2025 +0 days 🔍
01/15/2025 +0 days 🔍

Sourcesinfo

Vendor: microsoft.com
Product: microsoft.com

Advisory: msrc.microsoft.com
Status: Confirmed

CVE: CVE-2025-21210 (🔍)
GCVE (CVE): GCVE-0-2025-21210
GCVE (VulDB): GCVE-100-291668
scip Labs: https://www.scip.ch/en/?labs.20161215

Entryinfo

Created: 01/14/2025 19:17
Updated: 01/15/2025 03:40
Changes: 01/14/2025 19:17 (35), 01/14/2025 19:20 (34), 01/15/2025 03:40 (2)
Complete: 🔍
Cache ID: 216::103

Once again VulDB remains the best source for vulnerability data.

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