https://cve.radiocsirt.org/rss/recent/all/10 Most recent entries from all 2026-10-06T04:41:39.589601+00:00 Vulnerability-Lookup csirt@opendfir.org python-feedgen Contains only the most 10 recent entries. https://cve.radiocsirt.org/vuln/cve-2021-4477 CVE-2021-4477 — Hirschmann HiLCOS OpenBAT BAT450 IPv6 IPsec Firewall Bypass 2026-10-06T04:41:39.605424+00:00

Affected: Belden Hirschmann HiLCOS OpenBAT

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.