WatchGuard warns of critical vulnerability in Firebox firewalls

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European organizations should immediately inventory their network environments to identify all WatchGuard Firebox firewall deployments. Until official patches are released, organizations should implement compensating controls such as restricting management interface access to trusted IP addresses, enforcing multi-factor authentication for administrative access, and monitoring firewall logs for unusual activity indicative of exploitation attempts. Network segmentation should be enhanced to limit the potential impact of a compromised firewall. Organizations should subscribe to WatchGuard security advisories and trusted cybersecurity news sources to receive timely updates and apply patches promptly once available. Additionally, conducting penetration testing and vulnerability assessments focused on firewall configurations can help identify and remediate weaknesses. Incident response plans should be reviewed and updated to address potential exploitation scenarios involving firewall compromise.