CVE-2026-27913
Received Received - Intake
Improper Input Validation in Windows BitLocker Enables Local Bypass

Publication date: 2026-04-14

Last updated on: 2026-04-23

Assigner: Microsoft Corporation

Description
Improper input validation in Windows BitLocker allows an unauthorized attacker to bypass a security feature locally.
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Meta Information
Published
2026-04-14
Last Modified
2026-04-23
Generated
2026-06-16
AI Q&A
2026-04-14
EPSS Evaluated
2026-06-15
NVD
CVE-2026-27913
EUVD
EUVD-2026-22455
Affected Vendors & Products
Showing 6 associated CPEs
Vendor Product Version / Range
microsoft windows_server_2012 r2
microsoft windows_server_2012 *
microsoft windows_server_2016 to 10.0.14393.9060 (exc)
microsoft windows_server_2019 to 10.0.17763.8644 (exc)
microsoft windows_server_2022 to 10.0.20348.5020 (exc)
microsoft windows_server_2022_23h2 to 10.0.25398.2274 (exc)
Helpful Resources
Exploitability
CWE
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KEV
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CWE ID Description
CWE-20 The product receives input or data, but it does not validate or incorrectly validates that the input has the properties that are required to process the data safely and correctly.
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Executive Summary

This vulnerability is caused by improper input validation in Windows BitLocker. It allows an unauthorized attacker to bypass a security feature locally on the affected system.

Impact Analysis

The vulnerability can impact you by allowing an unauthorized attacker to bypass security features of Windows BitLocker, potentially compromising the confidentiality and integrity of your encrypted data.

Mitigation Strategies

To mitigate this vulnerability, it is important to apply the security updates provided by Microsoft for Windows BitLocker as soon as they are available.

Since the vulnerability involves improper input validation allowing a local attacker to bypass security features, ensuring that all systems are updated and that local access is restricted to trusted users can help reduce risk.

Compliance Impact

The provided information does not specify how this vulnerability affects compliance with common standards and regulations such as GDPR or HIPAA.

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