FIREWALL 4

• CISA Adds Critical Palo Alto Networks Firewall Flaw to KEV Jun 1, 2026
• Coreruleset 4.21.0 - Firewall Bypass May 13, 2026
• Application Control Bypass for Data Exfiltration Mar 31, 2026
• Cisco Fixes Maximum-Severity Secure FMC Bugs Threatening Firewall Security Mar 4, 2026