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    CVE-2026-89010

    WAVLINK WN535M1 and WN535M3 routers running firmware prior to M35M1_V250922 contain an unauthenticated OS command injection vulnerability that allows remote attackers to execute arbitrary commands as root by sending crafted filenames to the sync_server daemon on TCP port 13136. The daemon interpolates attacker-controlled filename input containing shell metacharacters into a shell command string via sprintf() and passes it to system() without sanitization, enabling root-level command execution on the device.

    Published:Sep 11, 2026
    Last Modified:Oct 29, 2026
    EPS:Sep 11, 2026
    EPSS Score:0.03168
    CVSS Score:9.8

    Affected Products

    Vendor
    Wavlink
    Product
    Wn535m1
    Vendor
    Wavlink
    Product
    Wn535m3

    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