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    CVE-2026-29516

    Buffalo TeraStation NAS TS5400R firmware version 4.02-0.06 and prior contain an excessive file permissions vulnerability that allows authenticated attackers to read the /etc/shadow file by uploading and executing a PHP file through the webserver. Attackers can exploit world-readable permissions on /etc/shadow to retrieve hashed passwords for all configured accounts including root.

    Published:Mar 16, 2026
    Last Modified:May 14, 2026
    EPS:Mar 16, 2026
    EPSS Score:0.0001
    CVSS Score:4.9

    Affected Products

    Vendor
    Buffalo
    Product
    Terastation Nas Ts5400r
    Vendor
    Buffaloamericas
    Product
    Terastation Nas Ts5400r
    Vendor
    Buffaloamericas
    Product
    Terastation Nas Ts5400r Firmware

    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