Windows Hello Security Feature Bypass Vulnerability

MITRE NVD CVE.ORG JSON API Print: PDF PDF

Summary

CVECVE-2026-27906
StatePUBLISHED
Assignermicrosoft
Source PriorityCVE Program / NVD first with legacy fallback
Published2026-04-14 18:16:56 UTC
Updated2026-04-23 17:46:58 UTC
DescriptionImproper input validation in Windows Hello allows an authorized attacker to bypass a security feature locally.

Risk And Classification

Primary CVSS: v3.1 4.4 MEDIUM from [email protected]

CVSS:3.1/AV:L/AC:L/PR:H/UI:N/S:U/C:H/I:N/A:N

EPSS: 0.000800000 probability, percentile 0.235360000 (date 2026-04-24)

Problem Types: CWE-20 | CWE-20 CWE-20: Improper Input Validation

VersionSourceTypeScoreSeverityVector
3.1[email protected]Secondary4.4MEDIUMCVSS:3.1/AV:L/AC:L/PR:H/UI:N/S:U/C:H/I:N/A:N
3.1CNACVSS4.4MEDIUMCVSS:3.1/AV:L/AC:L/PR:H/UI:N/S:U/C:H/I:N/A:N/E:U/RL:O/RC:C

CVSS v3.1 Breakdown

Attack Vector
Local
Attack Complexity
Low
Privileges Required
High
User Interaction
None
Scope
Unchanged
Confidentiality
High
Integrity
None
Availability
None

CVSS:3.1/AV:L/AC:L/PR:H/UI:N/S:U/C:H/I:N/A:N

NVD Known Affected Configurations (CPE 2.3)

TypeVendorProductVersionUpdateEditionLanguage
Operating System Microsoft Windows 10 21h2 All All All All
Operating System Microsoft Windows 10 21h2 All All All All
Operating System Microsoft Windows 10 21h2 All All All All
Operating System Microsoft Windows 10 22h2 All All All All
Operating System Microsoft Windows 10 22h2 All All All All
Operating System Microsoft Windows 10 22h2 All All All All
Operating System Microsoft Windows 11 23h2 All All All All
Operating System Microsoft Windows 11 23h2 All All All All
Operating System Microsoft Windows 11 24h2 All All All All
Operating System Microsoft Windows 11 24h2 All All All All
Operating System Microsoft Windows 11 25h2 All All All All
Operating System Microsoft Windows 11 25h2 All All All All
Operating System Microsoft Windows 11 26h1 All All All All
Operating System Microsoft Windows 11 26h1 All All All All

Vendor Declared Affected Products

SourceVendorProductVersionPlatforms
CNA Microsoft Windows 10 Version 21H2 affected 10.0.19044.0 10.0.19044.7184 custom 32-bit Systems, ARM64-based Systems, x64-based Systems
CNA Microsoft Windows 10 Version 22H2 affected 10.0.19045.0 10.0.19045.7184 custom 32-bit Systems, ARM64-based Systems, x64-based Systems
CNA Microsoft Windows 11 Version 22H3 affected 10.0.22631.0 10.0.22631.6936 custom ARM64-based Systems
CNA Microsoft Windows 11 Version 23H2 affected 10.0.22631.0 10.0.22631.6936 custom x64-based Systems
CNA Microsoft Windows 11 Version 24H2 affected 10.0.26100.0 10.0.26100.8246 custom ARM64-based Systems, x64-based Systems
CNA Microsoft Windows 11 Version 25H2 affected 10.0.26200.0 10.0.26200.8246 custom ARM64-based Systems, x64-based Systems
CNA Microsoft Windows 11 Version 26H1 affected 10.0.28000.0 10.0.28000.1836 custom ARM64-based Systems, x64-based Systems

References

ReferenceSourceLinkTags
msrc.microsoft.com/update-guide/vulnerability/CVE-2026-27906 [email protected] msrc.microsoft.com Vendor Advisory
CVE Program record CVE.ORG www.cve.org canonical
NVD vulnerability detail NVD nvd.nist.gov canonical, analysis
© CVE.report 2026 |

Use of this information constitutes acceptance for use in an AS IS condition. There are NO warranties, implied or otherwise, with regard to this information or its use. Any use of this information is at the user's risk. It is the responsibility of user to evaluate the accuracy, completeness or usefulness of any information, opinion, advice or other content. EACH USER WILL BE SOLELY RESPONSIBLE FOR ANY consequences of his or her direct or indirect use of this web site. ALL WARRANTIES OF ANY KIND ARE EXPRESSLY DISCLAIMED. This site will NOT BE LIABLE FOR ANY DIRECT, INDIRECT or any other kind of loss.

CVE, CWE, and OVAL are registred trademarks of The MITRE Corporation and the authoritative source of CVE content is MITRE's CVE web site. This site includes MITRE data granted under the following license.

Free CVE JSON API cve.report/api

CVE.report and Source URL Uptime Status status.cve.report