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CVE-2024-20681: Windows Subsystem for Linux Elevation of Privilege Vulnerability

• Severity: high (CVSS 7.8 v3.1)
• Exploited in the wild: not listed in CISA KEV
• EPSS: 0.7% probability of exploitation in the next 30 days
• Public exploit or detection template: none known
• Published: 2024-01-09 · updated 2026-06-17
• Weakness: CWE-416

Description

Windows Subsystem for Linux Elevation of Privilege Vulnerability

Affected products

• Microsoft Windows 10: before 10.0.19044.3930 — fixed in 10.0.19044.3930
• Microsoft Windows 10: before 10.0.19045.3930 — fixed in 10.0.19045.3930
• Microsoft Windows 11 21H2: before 10.0.22000.2713 — fixed in 10.0.22000.2713
• Microsoft Windows 11: before 10.0.22621.3007 — fixed in 10.0.22621.3007
• Microsoft Windows 11: before 10.0.22631.3007 — fixed in 10.0.22631.3007
• Microsoft Windows Server 2022: all versions
• Microsoft Windows Server 2022, 23H2 Edition (Server Core installation): all versions
• Microsoft Windows 10: from 10.0.19043.0 before 10.0.19044.3930 — fixed in 10.0.19044.3930
• Microsoft Windows 10: from 10.0.19045.0 before 10.0.19045.3930 — fixed in 10.0.19045.3930
• Microsoft Windows 11 21H2: from 10.0.0 before 10.0.22000.2713 — fixed in 10.0.22000.2713
• Microsoft Windows 11: from 10.0.22621.0 before 10.0.22621.3007 — fixed in 10.0.22621.3007
• Microsoft Windows 11 version 22H3: from 10.0.22631.0 before 10.0.22631.3007 — fixed in 10.0.22631.3007
• Microsoft Windows 11: from 10.0.22631.0 before 10.0.22631.3007 — fixed in 10.0.22631.3007
• Microsoft Windows Server 2022: from 10.0.20348.0 before 10.0.20348.2227 — fixed in 10.0.20348.2227
• Microsoft Windows Server 2022, 23H2 Edition (Server Core installation): from 10.0.25398.0 before 10.0.25398.643 — fixed in 10.0.25398.643

How to fix

Upgrade to a fixed version: Microsoft Windows 10 10.0.19044.3930; Microsoft Windows 10 10.0.19045.3930; Microsoft Windows 11 21H2 10.0.22000.2713; Microsoft Windows 11 10.0.22621.3007; Microsoft Windows 11 10.0.22631.3007; Microsoft Windows 10 10.0.19044.3930; Microsoft Windows 10 10.0.19045.3930; Microsoft Windows 11 21H2 10.0.22000.2713; Microsoft Windows 11 10.0.22621.3007; Microsoft Windows 11 version 22H3 10.0.22631.3007; Microsoft Windows 11 10.0.22631.3007; Microsoft Windows Server 2022 10.0.20348.2227. Check the vendor advisory for mitigations.

References

• https://msrc.microsoft.com/update-guide/vulnerability/CVE-2024-20681
• https://msrc.microsoft.com/update-guide/vulnerability/CVE-2024-20681

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