CVE-2017-20233

MEDIUM SEVERITY

CVSS Score & Metrics

Base Score

5.4 / 10

Vector String

                                        CVSS:3.1/AV:A/AC:L/PR:N/UI:N/S:U/C:L/I:L/A:N                                    

Vulnerability 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.

Vulnerability Details

Published Date

April 03, 2026

Last Modified

April 07, 2026

CWE ID

CWE-284

Source

NVD

Vendor

Belden

Product

Hirschmann HiLCOS OpenBAT, BAT450, WLC, Hirschmann HiLCOS BAT867

External References

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

CVE-2017-20233

CVSS Score & Metrics

Vulnerability Description

Vulnerability Details

External References

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