MEDIUM 4.4 Microsoft
CVE-2026-20825
Windows Hyper-V Information Disclosure Vulnerability
Microsoft Security Update 2026-Jan: Windows Hyper-V Information Disclosure Vulnerability
Affected Products
- Windows 10 Version 1809 for x64-based Systems
- Windows Server 2019
- Windows Server 2019 (Server Core installation)
- Windows Server 2022
- Windows Server 2022 (Server Core installation)
- Windows 10 Version 21H2 for x64-based Systems
- Windows 10 Version 22H2 for x64-based Systems
- Windows Server 2025 (Server Core installation)
References
- https://msrc.microsoft.com/update-guide/vulnerability/CVE-2026-20825
- https://nvd.nist.gov/vuln/detail/CVE-2026-20825
This medium severity vulnerability with a CVSS score of 4.4 was published on 2026-01-13 via Microsoft. Affected: Windows 10 Version 1809 for x64-based Systems, Windows Server 2019, Windows Server 2019 (Server Core installation) and 5 more.
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