CVE-2026-27906 Details
Description
Improper input validation in Windows Hello allows an authorized attacker to bypass a security feature locally.
A vulnerability allowing an authorized attacker to bypass a security feature in Windows Hello has been identified. This issue arises from improper input validation, which could enable the attacker to undermine protections that rely on trusted TPM counters. The vulnerability affects several versions of Windows 10 and Windows 11.
Users can download the security update for this vulnerability via the Microsoft Update Catalog. Specific update details can be found in the Microsoft Knowledge Base articles KB5082200 for Windows 10 and KB5083768 for Windows 11.
Metrics
CVSS 4.0 Severity and Vector Strings:
No CVSS 4.0 data is available for this CVE.
CVSS 3.x Severity and Vector Strings:
No data available for CVSS Version 2.0 on this CVE.
CISA-ADP
Assessed Apr 14, 2026References to Advisories, Solutions, and Tools
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| URL | Source(s) | Tag(s) |
|---|---|---|
| https://msrc.microsoft.com/update-guide/vulnerability/CVE-2026-27906 | [email protected] | Vendor Advisory |
Weakness Enumeration
| CWE-ID | CWE Name | Source |
|---|---|---|
| CWE-20 | Improper Input Validation | [email protected] |
Affected Products
| Product | Versions |
|---|---|
| microsoft windows 10 21h2 | < 10.0.19044.7184 |
CPE
Remediation
| |
| microsoft windows 10 22h2 | < 10.0.19045.7184 |
CPE
Remediation
| |
| microsoft windows 11 23h2 | < 10.0.22631.6936 |
CPE
Remediation
| |
| microsoft windows 11 24h2 | < 10.0.26100.8246 |
CPE
Remediation
| |
| microsoft windows 11 25h2 | < 10.0.26200.8246 |
CPE
Remediation
| |
| microsoft windows 11 26h1 | < 10.0.28000.1836 |
CPE
Remediation
| |
Change History
4 change records found show changes
| Date | Action | Recorded By |
|---|---|---|
| Jun 17, 2026 | CVE Modified | [email protected] |
| Jun 17, 2026 | CVE Modified | CISA-ADP |
| Apr 23, 2026 | Initial Analysis | [email protected] |
| Apr 14, 2026 | New CVE Received | [email protected] |