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    CVE-2017-5544

    An issue was discovered on FiberHome Fengine S5800 switches V210R240. An unauthorized attacker can access the device's SSH service, using a password cracking tool to establish SSH connections quickly. This will trigger an increase in the SSH login timeout (each of the login attempts will occupy a connection slot for a longer time). Once this occurs, legitimate login attempts via SSH/telnet will be refused, resulting in a denial of service; you must restart the device.

    Published:Jan 23, 2017
    Last Modified:Apr 20, 2025
    EPS:Jan 23, 2017
    EPSS Score:0.00031
    CVSS Score:5.9

    Affected Products

    Vendor
    Fiberhome
    Product
    Fengine 28f-s
    Vendor
    Fiberhome
    Product
    Fengine 52f-s
    Vendor
    Fiberhome
    Product
    Fengine 52t-s
    Vendor
    Fiberhome
    Product
    Fengine S5800-28t-s
    Vendor
    Fiberhome
    Product
    Fengine S5800-28t-s-pe
    Vendor
    Fiberhome
    Product
    Fengine S5800 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