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Advisory severityMedium4.4Microsoft Server

Medium [CVE-2026-83926] Windows Hello Security Feature Bypass Vulnerability

This medium-severity Microsoft Server advisory covers CVE-2026-83926 affecting Windows Server 2019 (Server Core installation), Windows Server 2022, Windows Server 2025 (Server Core installation).

Aggregated and source-linked by VulniPulse. Data sources, validation and limitations.

CVE-2026-83926 Source published Source updated

VulniPulse record published

CVE-2026-83926
Affected products & platforms
Microsoft ServerWindows Server
Open source advisory

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Summary

Improper certificate validation in Windows Hello allows an authorized attacker to bypass a security feature locally.

Affected products named by the advisory: Windows Server 2019; Windows Server 2019 (Server Core installation); Windows Server 2022; Windows Server 2025; and 1 more.

Affected products named by the advisory: Windows Server 2025 (Server Core installation).

Affected versions
  • Windows 10 Version 1809 10.0.17763.0 before 10.0.17763.9376
  • Windows 10 Version 21H2 10.0.19044.0 before 10.0.19044.7807
  • Windows 10 Version 22H2 10.0.19045.0 before 10.0.19044.7807
  • Windows 11 version 23H2 10.0.22631.0 before 10.0.22631.7652
  • Windows 11 Version 23H2 10.0.22631.0 before 10.0.22631.7652
  • Windows 11 Version 24H2 10.0.26100.0 before 10.0.26100.9711
  • Windows 11 Version 25H2 10.0.26200.0 before 10.0.26200.9711
  • Windows 11 version 26H1 10.0.28000.0 before 10.0.28000.3231
  • Windows 11 Version 26H2 10.0.26300.0 before 10.0.26300.9711
  • Windows Server 2019 10.0.17763.0 before 10.0.17763.9376
  • Windows Server 2019 (Server Core installation) 10.0.17763.0 before 10.0.17763.9376
  • Windows Server 2022 10.0.20348.0 before 10.0.20348.5761

Official advisory · high-confidence parse· fetched 1 day ago·verify at source

Fixed versions
  • 10.0.17763.9376
  • 10.0.19044.7807
  • 10.0.22631.7652
  • 10.0.26100.9711
  • 10.0.26200.9711
  • 10.0.28000.3231
  • 10.0.26300.9711
  • 10.0.20348.5761
  • 10.0.26100.33650

Official advisory · high-confidence parse· fetched 1 day ago·verify at source

Mitigation

Upgrade to a fixed release: 10.0.17763.9376, 10.0.19044.7807, 10.0.22631.7652, 10.0.26100.9711, 10.0.26200.9711, 10.0.28000.3231. That is the remediation for this advisory.

The vendor advisory may list additional interim mitigations or workarounds not captured here — review it before change work.

Official advisory · high-confidence parse· fetched 1 day ago·verify at source

Discussion(0)

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