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    CVE-2023-28807

    In Zscaler Internet Access (ZIA) a mismatch between Connect Host and Client Hello's Server Name Indication (SNI) enables attackers to evade network security controls by hiding their communications within legitimate traffic.

    Published:Jan 31, 2024
    Last Modified:Jun 17, 2025
    EPS:Jan 31, 2024
    EPSS Score:0.00038
    CVSS Score:5.1

    Affected Products

    Vendor
    Zscaler
    Product
    Secure Internet And Saas Access

    Exploits

    No exploit reference

    Common Weakness Enumeration

    CWE-295 Improper Certificate Validation

    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