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    CVE-2026-105545

    An elevation of privilege vulnerability exists in the Windows Installer when the Windows Installer fails to properly sanitize input leading to an insecure library loading behavior. A locally authenticated attacker could run arbitrary code with elevated system privileges. An attacker could then install programs; view, change, or delete data; or create new accounts with full user rights. The security update addresses the vulnerability by correcting the input sanitization error to preclude unintended elevation.

    Published:Nov 10, 2026
    Last Modified:Nov 11, 2026
    EPS:Nov 10, 2026
    EPSS Score:0.00198
    CVSS Score:7

    Affected Products

    Vendor
    Microsoft
    Product
    Windows 10 1607
    Vendor
    Microsoft
    Product
    Windows 10 1809
    Vendor
    Microsoft
    Product
    Windows 10 21H2
    Vendor
    Microsoft
    Product
    Windows 10 21h2
    Vendor
    Microsoft
    Product
    Windows 10 22H2
    Vendor
    Microsoft
    Product
    Windows 10 22h2
    Vendor
    Microsoft
    Product
    Windows 11 23H2
    Vendor
    Microsoft
    Product
    Windows 11 23h2
    Vendor
    Microsoft
    Product
    Windows 11 24H2
    Vendor
    Microsoft
    Product
    Windows 11 24h2
    Vendor
    Microsoft
    Product
    Windows 11 25H2
    Vendor
    Microsoft
    Product
    Windows 11 25h2
    Vendor
    Microsoft
    Product
    Windows 11 26H1
    Vendor
    Microsoft
    Product
    Windows 11 26h1
    Vendor
    Microsoft
    Product
    Windows 11 26h2
    Vendor
    Microsoft
    Product
    Windows 11 Version 26h2 For X64-based Systems
    Vendor
    Microsoft
    Product
    Windows Server 2012
    Vendor
    Microsoft
    Product
    Windows Server 2012 (server Core Installation)
    Vendor
    Microsoft
    Product
    Windows Server 2012 R2
    Vendor
    Microsoft
    Product
    Windows Server 2012 R2
    Vendor
    Microsoft
    Product
    Windows Server 2012 R2 (server Core Installation)
    Vendor
    Microsoft
    Product
    Windows Server 2016
    Vendor
    Microsoft
    Product
    Windows Server 2016 (server Core Installation)
    Vendor
    Microsoft
    Product
    Windows Server 2019
    Vendor
    Microsoft
    Product
    Windows Server 2019 (server Core Installation)
    Vendor
    Microsoft
    Product
    Windows Server 2022
    Vendor
    Microsoft
    Product
    Windows Server 2025
    Vendor
    Microsoft
    Product
    Windows Server 2025 (server Core Installation)

    Exploits

    No exploit reference

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    Common Vulnerability Scoring System

    Attack Vector
    Network
    Adjacent
    Local
    Physical
    Privileges Required
    None
    Low
    High
    User Interaction
    None
    Required
    Scope
    Unchanged
    Changed
    Confidentiality
    None
    Low
    High
    Integrity
    None
    Low
    High
    Availability
    None
    Low
    High