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    CVE-2017-20233

    Hirschmann HiLCOS products OpenBAT, BAT450, WLC, BAT867 contains a firewall filtering vulnerability that fails to correctly filter IPv4 multicast and broadcast traffic when management IP address filtering is disabled, allowing configured filter rules to be bypassed. Attackers with network access can inject or observe multicast and broadcast packets that should have been blocked by the firewall.

    Published:Apr 3, 2026
    Last Modified:May 12, 2026
    EPS:Apr 3, 2026
    EPSS Score:0.00004
    CVSS Score:5.4

    Affected Products

    Vendor
    Belden
    Product
    Hirschmann Hilcos Bat450
    Vendor
    Belden
    Product
    Hirschmann Hilcos Bat867
    Vendor
    Belden
    Product
    Hirschmann Hilcos Openbat
    Vendor
    Belden
    Product
    Hirschmann Hilcos Wlc

    Exploits

    No exploit reference

    Common Weakness Enumeration

    CWE-284 Improper Access Control

    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