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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 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.

CVSS 4.0 · 5.3 Medium EPSS < 1% KEV · Not listed
Vendors
Belden
Products
Hirschmann Hilcos Bat450 Hirschmann Hilcos Bat867 Hirschmann Hilcos Openbat and 1 more
CVE-2021-4477

Hirschmann HiLCOS OpenBAT BAT450 IPv6 IPsec Firewall Bypass

Hirschmann HiLCOS OpenBAT and BAT450 products contain a firewall bypass vulnerability in IPv6 IPsec deployments that allows traffic from VPN connections to bypass configured firewall rules. Attackers can exploit this vulnerability by establishing IPv6 IPsec connections (IKEv1 or IKEv2) while simultaneously using an IPv6 Internet connection to circumvent firewall policy enforcement.

CVSS 4.0 · 9.3 Critical EPSS < 1% KEV · Not listed
Vendors
Belden
Products
Hirschmann Hilcos Openbat