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    CVE-2025-53787

    Microsoft 365 Copilot BizChat Information Disclosure Vulnerability

    Published:Aug 7, 2025
    Last Modified:Feb 26, 2026
    EPS:Aug 7, 2025
    EPSS Score:0.00103
    CVSS Score:8.2

    Affected Products

    Vendor
    Microsoft
    Product
    365
    Vendor
    Microsoft
    Product
    365 Copilot
    Vendor
    Microsoft
    Product
    365 Copilot Business Chat
    Vendor
    Microsoft
    Product
    365 Copilot Chat

    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