CVE-2026-25166: Windows System Image Manager Assessment and Deployment Kit (ADK) Remote Code Execution Vulnerability

Severity: high (CVSS 7.8 v3.1)
Exploited in the wild: not listed in CISA KEV
EPSS: 1.7% probability of exploitation in the next 30 days
Public exploit or detection template: none known
Published: 2026-03-10 · updated 2026-06-19
Weakness: CWE-502

Description

Deserialization of untrusted data in Windows System Image Manager allows an authorized attacker to execute code locally.

Affected products

Microsoft Windows 10 1607: before 10.0.14393.8957 — fixed in 10.0.14393.8957
Microsoft Windows 10: before 10.0.17763.8511 — fixed in 10.0.17763.8511
Microsoft Windows 10: before 10.0.19044.7058 — fixed in 10.0.19044.7058
Microsoft Windows 10: before 10.0.19045.7058 — fixed in 10.0.19045.7058
Microsoft Windows 11: before 10.0.22631.6783 — fixed in 10.0.22631.6783
Microsoft Windows 11: before 10.0.26100.7979 — fixed in 10.0.26100.7979
Microsoft Windows 11 25H2: before 10.0.26200.7979 — fixed in 10.0.26200.7979
Microsoft Windows 11 version 26H1: before 10.0.28000.1719 — fixed in 10.0.28000.1719
Microsoft Windows Server 2016: before 10.0.14393.8957 — fixed in 10.0.14393.8957
Microsoft Windows Server 2019: before 10.0.17763.8511 — fixed in 10.0.17763.8511
Microsoft Windows Server 2022: before 10.0.20348.4830 — fixed in 10.0.20348.4830
Microsoft Windows Server 2022, 23H2 Edition (Server Core installation): before 10.0.25398.2207 — fixed in 10.0.25398.2207
Microsoft Windows ADK for Windows 10, version 2004: all versions
Microsoft Windows ADK for Windows 11, version 22H2: all versions
Microsoft Windows ADK for Windows 11, version 23H2: all versions
Microsoft Windows ADK for Windows 11, version 24H2: all versions
Microsoft Windows ADK for Windows Server 2022: all versions

How to fix

Upgrade to a fixed version: Microsoft Windows 10 1607 10.0.14393.8957; Microsoft Windows 10 10.0.17763.8511; Microsoft Windows 10 10.0.19044.7058; Microsoft Windows 10 10.0.19045.7058; Microsoft Windows 11 10.0.22631.6783; Microsoft Windows 11 10.0.26100.7979; Microsoft Windows 11 25H2 10.0.26200.7979; Microsoft Windows 11 version 26H1 10.0.28000.1719; Microsoft Windows Server 2016 10.0.14393.8957; Microsoft Windows Server 2019 10.0.17763.8511; Microsoft Windows Server 2022 10.0.20348.4830; Microsoft Windows Server 2022, 23H2 Edition (Server Core installation) 10.0.25398.2207. Check the vendor advisory for mitigations.

References

https://msrc.microsoft.com/update-guide/vulnerability/CVE-2026-25166

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