Windows CVE-2026-25166
HIGHCVSS VectorNVD
CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
Lifecycle Timeline
2DescriptionNVD
Deserialization of untrusted data in Windows System Image Manager allows an authorized attacker to execute code locally.
AnalysisAI
Local code execution in Windows System Image Manager (Windows 11 23h2, Windows Server 2019/2022) through unsafe deserialization of untrusted data. An authenticated local attacker can exploit this vulnerability to execute arbitrary code with elevated privileges. …
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RemediationAI
Within 24 hours: Identify all systems running Windows System Image Manager and document authorized users with access. Within 7 days: Implement network segmentation to restrict System Image Manager communications, disable the tool if not actively required, and enforce principle of least privilege on user accounts with access permissions. …
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