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CVE-2021-4477

Hirschmann HiLCOS

Descrição

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 9.1EPSS 0.319%Risco 0.94
Ver fonte
Publicação
2026-04-03 23:17:01
Versões afetadas
unknown
Tipo
Firmware
Última alteração
2026-07-24 22:10:00
Vetor
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:N