Palo Alto Networks Firewall Vulnerability Allows Attackers to Trigger Denial of Service

Palo Alto Networks has patched a critical denial-of-service vulnerability in its PAN-OS firewall software, tracked as CVE-2026-0227, which lets unauthenticated attackers disrupt GlobalProtect gateways and portals. The flaw carries a CVSS v4.0 base score of 7.7 (HIGH severity), stemming from improper checks for unusual conditions that force firewalls into maintenance mode after repeated exploitation attempts. […]

The post Palo Alto Networks Firewall Vulnerability Allows Attackers to Trigger Denial of Service appeared first on Cyber Security News.