Description
Improper input validation in Windows Server Update Service allows an unauthorized attacker to execute code over a network.
CVSS Metrics
- Vector
- CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:H
- Attack Vector
- network
- Complexity
- high
- Privileges
- none
- User Action
- none
- Scope
- unchanged
- Confidentiality
- high
- Integrity
- high
- Availability
- high
- Weaknesses
- CWE-20
Metadata
- Primary Vendor
- MICROSOFT
- Published
- 1/13/2026
- Last Modified
- 1/15/2026
- Source
- NIST NVD
- Note: Verify all details with official vendor sources before applying patches.
Affected Products
microsoft : windows_10_1607microsoft : windows_10_1607microsoft : windows_10_1809microsoft : windows_10_1809microsoft : windows_10_21h2microsoft : windows_10_22h2microsoft : windows_11_23h2microsoft : windows_11_24h2microsoft : windows_11_25h2microsoft : windows_server_2012microsoft : windows_server_2012microsoft : windows_server_2016microsoft : windows_server_2019microsoft : windows_server_2022microsoft : windows_server_2022_23h2microsoft : windows_server_2025
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