Description

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.

INFO

Published Date :

2026-04-03T22:47:07.496Z

Last Modified :

2026-04-06T16:50:39.698Z

Source :

VulnCheck
AFFECTED PRODUCTS

The following products are affected by CVE-2017-20233 vulnerability.

Vendors Products
Belden
  • Hirschmann Hilcos Bat450
  • Hirschmann Hilcos Bat867
  • Hirschmann Hilcos Openbat
  • Hirschmann Hilcos Wlc
REFERENCES

Here, you will find a curated list of external links that provide in-depth information to CVE-2017-20233.

URL Resource
https://assets.belden.com/m/11a07596f0bf1018/original/Security-Bulletin-IPv4-Multicast-HiLCOS-Layer-2-Firewall-BSECV-2017-03.pdf cve-icon cve-icon
https://www.vulncheck.com/advisories/hirschmann-hilcos-layer-2-firewall-multicast-broadcast-traffic-bypass cve-icon cve-icon
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CVSS Vulnerability Scoring System

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Detailed values of each vector for above chart.
Attack Vector
Attack Complexity
Privileges Required
User Interaction
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Confidentiality Impact
Integrity Impact
Availability Impact