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Unrated severityCISA KEVNVD Advisory· Published Feb 10, 2026· Updated Apr 10, 2026

Windows Shell Security Feature Bypass Vulnerability

CVE-2026-21510

Description

Protection mechanism failure in Windows Shell allows an unauthorized attacker to bypass a security feature over a network.

Affected products

21
  • Microsoft/Windows 10 Version 1607v5
    Range: 10.0.14393.0
  • Microsoft/Windows 10 Version 1809v5
    Range: 10.0.17763.0
  • Microsoft/Windows 10 Version 21H2v5
    Range: 10.0.19044.0
  • Microsoft/Windows 10 Version 22H2v5
    Range: 10.0.19045.0
  • Microsoft/Windows 11 version 22H3v5
    Range: 10.0.22631.0
  • Microsoft/Windows 11 Version 23H2v5
    Range: 10.0.22631.0
  • Microsoft/Windows 11 Version 24H2v5
    Range: 10.0.26100.0
  • Microsoft/Windows 11 Version 25H2v5
    Range: 10.0.26200.0
  • Microsoft/Windows 11 Version 26H1v5
    Range: 10.0.28000.0
  • Microsoft/Windows Server 2012v5
    Range: 6.2.9200.0
  • Microsoft/Windows Server 2012 R2v5
    Range: 6.3.9600.0
  • Microsoft/Windows Server 2012 R2 (Server Core installation)v5
    Range: 6.3.9600.0
  • Microsoft/Windows Server 2012 (Server Core installation)v5
    Range: 6.2.9200.0
  • Microsoft/Windows Server 2016v5
    Range: 10.0.14393.0
  • Microsoft/Windows Server 2016 (Server Core installation)v5
    Range: 10.0.14393.0
  • Microsoft/Windows Server 2019v5
    Range: 10.0.17763.0
  • Microsoft/Windows Server 2019 (Server Core installation)v5
    Range: 10.0.17763.0
  • Microsoft/Windows Server 2022v5
    Range: 10.0.20348.0
  • Microsoft/Windows Server 2022, 23H2 Edition (Server Core installation)v5
    Range: 10.0.25398.0
  • Microsoft/Windows Server 2025v5
    Range: 10.0.26100.0
  • Microsoft/Windows Server 2025 (Server Core installation)v5
    Range: 10.0.26100.0

Patches

0

No patches discovered yet.

Vulnerability mechanics

AI mechanics synthesis has not run for this CVE yet.

References

1

News mentions

2