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CISA warns federal agencies to patch Cisco ASA/FTD zero-days and validate compromise under ED 25-03

Cisco firewall zero-days: CISA says patch & retire EOS hardware

CISA warned that multiple federal agencies still haven’t fully patched Cisco ASA/FTD devices despite active exploitation. Because the campaign targets the VPN web server and enables device takeover, teams must apply fixes for CVE-2025-20333/20362, follow ED 25-03 inventory and validation steps, and disconnect end-of-support hardware. This analysis explains impact, attack flow, high-signal detection, and fast remediation so defenders can reduce edge-device risk without slowing operations.

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