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    CVE-2022-45440

    A vulnerability exists in the FTP server of the Zyxel AX7501-B0 firmware prior to V5.17(ABPC.3)C0, which processes symbolic links on external storage media. A local authenticated attacker with administrator privileges could abuse this vulnerability to access the root file system by creating a symbolic link on external storage media, such as a USB flash drive, and then logging into the FTP server on a vulnerable device.

    Published:Jan 17, 2023
    Last Modified:Dec 17, 2025
    EPS:Jan 17, 2023
    EPSS Score:0.00044
    CVSS Score:4.4

    Affected Products

    Vendor
    Zyxel
    Product
    Ax7501-b0
    Vendor
    Zyxel
    Product
    Ax7501-b0 Firmware

    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