CVE-2017-20233 — Hirschmann HiLCOS Layer-2 Firewall Multicast Broadcast Traffic Bypass
Hirschmann HiLCOS products OpenBAT, BAT450, WLC, BAT867 contains a firewall filtering vulnerability that fails to correctly filter IPv4 multicast and broadcast traffic when mana…
Published: 2026-04-03 · CVSS: 5.3 · CVSS 4.0
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.
Source: CVE Program · Revision 8b16575c39f1e1810c5e863010da073d2d3285e7