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    CVE-2026-70179

    Authentication bypass by spoofing in ASP.NET Core allows an authorized attacker to elevate privileges over a network.

    Published:Oct 13, 2026
    Last Modified:Oct 14, 2026
    EPS:Oct 13, 2026
    EPSS Score:0.00555
    CVSS Score:7.5

    Affected Products

    Vendor
    Microsoft
    Product
    Microsoft.aspnetcore.authentication.negotiate
    Vendor
    Microsoft
    Product
    Microsoft Visual Studio 2026 Version 18.10
    Vendor
    Microsoft
    Product
    Visual Studio 2022

    Exploits

    No exploit reference

    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