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    CVE-2026-44403

    Wing FTP Server before 8.1.3 contains an authenticated remote code execution vulnerability in the session serialization mechanism that allows authenticated administrators to inject arbitrary Lua code through the domain admin mydirectory field. Attackers can exploit unsafe serialization of session values into Lua source code without proper escaping of closing delimiters, causing the injected code to be executed when the poisoned session is loaded via loadfile().

    Published:May 12, 2026
    Last Modified:Jul 14, 2026
    EPS:May 12, 2026
    EPSS Score:0.02643
    CVSS Score:7.2

    Affected Products

    Vendor
    Wftpserver
    Product
    Wing Ftp Server
    Vendor
    Wing Ftp Server
    Product
    Wing Ftp Server

    Exploits

    https://www.exploit-db.com/exploits/52589https://github.com/ZemarKhos/CVE-2026-44403-WingFTP-v8.1.2-POC-Exploit

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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