A sudden and highly coordinated wave of cyberattacks has struck Zyxel firewall and VPN devices worldwide, as hackers exploit a critical remote code execution (RCE) vulnerability tracked as CVE-2023-28771. The attacks, observed on June 16, 2025, leveraged UDP port 500—the Internet Key Exchange (IKE) packet decoder—to remotely inject system commands and potentially seize full control […]
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