CVE-2025-24084: Windows Subsystem for Linux (WSL2) Kernel Remote Code Execution Vulnerability

Severity: high (CVSS 8.4 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: 2025-03-11 · updated 2026-06-17
Weakness: CWE-822

Description

Untrusted pointer dereference in Windows Subsystem for Linux allows an unauthorized attacker to execute code locally.

Affected products

Microsoft Windows 11: before 10.0.22621.5039 — fixed in 10.0.22621.5039
Microsoft Windows 11: before 10.0.22631.5039 — fixed in 10.0.22631.5039
Microsoft Windows 11: before 10.0.26100.3403 — fixed in 10.0.26100.3403
Microsoft Windows Server 2022: before 10.0.20348.3270 — fixed in 10.0.20348.3270
Microsoft Windows Server 2022, 23H2 Edition (Server Core installation): before 10.0.25398.1486 — fixed in 10.0.25398.1486
Microsoft Windows Server 2025: before 10.0.26100.3403 — fixed in 10.0.26100.3403
Microsoft Windows 11: from 10.0.22621.0 before 10.0.22621.5039 — fixed in 10.0.22621.5039
Microsoft Windows 11 version 22H3: from 10.0.22631.0 before 10.0.22631.5039 — fixed in 10.0.22631.5039
Microsoft Windows 11: from 10.0.22631.0 before 10.0.22631.5039 — fixed in 10.0.22631.5039
Microsoft Windows 11: from 10.0.26100.0 before 10.0.26100.3476 — fixed in 10.0.26100.3476
Microsoft Windows Server 2022: from 10.0.20348.0 before 10.0.20348.3328 — fixed in 10.0.20348.3328
Microsoft Windows Server 2022, 23H2 Edition (Server Core installation): from 10.0.25398.0 before 10.0.25398.1486 — fixed in 10.0.25398.1486
Microsoft Windows Server 2025: from 10.0.26100.0 before 10.0.26100.3476 — fixed in 10.0.26100.3476

How to fix

Upgrade to a fixed version: Microsoft Windows 11 10.0.22621.5039; Microsoft Windows 11 10.0.22631.5039; Microsoft Windows 11 10.0.26100.3403; Microsoft Windows Server 2022 10.0.20348.3270; Microsoft Windows Server 2022, 23H2 Edition (Server Core installation) 10.0.25398.1486; Microsoft Windows Server 2025 10.0.26100.3403; Microsoft Windows 11 10.0.22621.5039; Microsoft Windows 11 version 22H3 10.0.22631.5039; Microsoft Windows 11 10.0.22631.5039; Microsoft Windows 11 10.0.26100.3476; Microsoft Windows Server 2022 10.0.20348.3328; Microsoft Windows Server 2022, 23H2 Edition (Server Core installation) 10.0.25398.1486. Check the vendor advisory for mitigations.

References

https://msrc.microsoft.com/update-guide/vulnerability/CVE-2025-24084

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