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Description

Improper input validation in Windows BitLocker allows an unauthorized attacker to bypass a security feature locally.

PUBLISHED Reserved 2026-02-24 | Published 2026-04-14 | Updated 2026-06-01 | Assigner microsoft




HIGH: 7.7CVSS:3.1/AV:L/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:N/E:U/RL:O/RC:C

Problem types

CWE-20: Improper Input Validation

Product status

6.2.9200.0 (custom) before 6.2.9200.26026
affected

6.2.9200.0 (custom) before 6.2.9200.26026
affected

6.3.9600.0 (custom) before 6.3.9600.23132
affected

6.3.9600.0 (custom) before 6.3.9600.23132
affected

10.0.14393.0 (custom) before 10.0.14393.9060
affected

10.0.14393.0 (custom) before 10.0.14393.9060
affected

10.0.17763.0 (custom) before 10.0.17763.8644
affected

10.0.17763.0 (custom) before 10.0.17763.8644
affected

10.0.20348.0 (custom) before 10.0.20348.5020
affected

10.0.25398.0 (custom) before 10.0.25398.2274
affected

References

msrc.microsoft.com/update-guide/vulnerability/CVE-2026-27913 (Windows BitLocker Security Feature Bypass Vulnerability) vendor-advisory patch

cve.org (CVE-2026-27913)

nvd.nist.gov (CVE-2026-27913)

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