Skip to content
CVE PROGRAM SOURCE RECORD7.5 High

CVE-2026-26154

Windows Server Update Service (WSUS) Tampering Vulnerability

Read JSON ↗CVE.org ↗
Status
Published
Published
Updated
Assigning organization
microsoft

Description

Improper input validation in Windows Server Update Service allows an unauthorized attacker to perform tampering over a network.

Affected products

Version statuses are supplied by the assigning organization. Consult the original record for detailed ranges and platform conditions.

Microsoft Windows Server 2012

  • 6.2.9200.0 to < 6.2.9200.26026affected

Microsoft Windows Server 2012 (Server Core installation)

  • 6.2.9200.0 to < 6.2.9200.26026affected

Microsoft Windows Server 2012 R2

  • 6.3.9600.0 to < 6.3.9600.23132affected

Microsoft Windows Server 2012 R2 (Server Core installation)

  • 6.3.9600.0 to < 6.3.9600.23132affected

Microsoft Windows Server 2016

  • 10.0.14393.0 to < 10.0.14393.9060affected

Microsoft Windows Server 2016 (Server Core installation)

  • 10.0.14393.0 to < 10.0.14393.9060affected

Microsoft Windows Server 2019

  • 10.0.17763.0 to < 10.0.17763.8644affected

Microsoft Windows Server 2019 (Server Core installation)

  • 10.0.17763.0 to < 10.0.17763.8644affected

Microsoft Windows Server 2022

  • 10.0.20348.0 to < 10.0.20348.5020affected

Microsoft Windows Server 2022, 23H2 Edition (Server Core installation)

  • 10.0.25398.0 to < 10.0.25398.2274affected

Microsoft Windows Server 2025

  • 10.0.26100.0 to < 10.0.26100.32690affected

Microsoft Windows Server 2025 (Server Core installation)

  • 10.0.26100.0 to < 10.0.26100.32690affected

References