Most recent entries from all https://cve.radiocsirt.org Contains only the most 10 recent entries. http://www.rssboard.org/rss-specification python-feedgen en Tue, 06 Oct 2026 11:17:06 +0000 CVE-2021-4477 — Hirschmann HiLCOS OpenBAT BAT450 IPv6 IPsec Firewall Bypass https://cve.radiocsirt.org/vuln/cve-2021-4477 <p><strong>Affected:</strong> Belden Hirschmann HiLCOS OpenBAT</p> <p>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.</p> <p><strong>Affected:</strong> Belden Hirschmann HiLCOS OpenBAT</p> <p>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.</p> https://cve.radiocsirt.org/vuln/cve-2021-4477