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    CVE-2026-20838

    Generation of error message containing sensitive information in Windows Kernel allows an authorized attacker to disclose information locally.

    Published:Jan 13, 2026
    Last Modified:Apr 16, 2026
    EPS:Jan 13, 2026
    EPSS Score:0.00055
    CVSS Score:5.5

    Affected Products

    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 Server 2022
    Vendor
    Microsoft
    Product
    Windows Server 2022 23h2
    Vendor
    Microsoft
    Product
    Windows Server 2025
    Vendor
    Microsoft
    Product
    Windows Server 23h2

    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