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    CVE-2026-85884

    Missing authentication for critical function in Windows Health and Optimized Experiences Service allows an authorized attacker to elevate privileges locally.

    Published:Oct 13, 2026
    Last Modified:Oct 29, 2026
    EPS:Oct 13, 2026
    EPSS Score:0.00446
    CVSS Score:7.8

    Affected Products

    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 Arm64-based Systems

    Exploits

    https://github.com/Beardhammer/CVE-2026-85884

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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