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    CVE-2026-72971

    Improper link resolution before file access ('link following') in Windows Container Isolation FS Filter Driver (unionfs.sys) allows an authorized attacker to perform tampering locally.

    Published:Aug 11, 2026
    Last Modified:Aug 14, 2026
    EPS:Aug 11, 2026
    EPSS Score:0.00365
    CVSS Score:5.5

    Affected Products

    Vendor
    Microsoft
    Product
    Windows 11 26H1
    Vendor
    Microsoft
    Product
    Windows 11 26h1

    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