A proof-of-concept (PoC) exploit for a high-severity security vulnerability affecting GlobalProtect Gateway and Portal has been provided by Palo Alto Networks.
A denial-of-service (DoS) situation affecting GlobalProtect PAN-OS software has been identified as the vulnerability, tagged as CVE-2026-0227 (CVSS score: 7.7), which results from an incorrect check for exceptional conditions (CWE-754).
In an advisory published on Wednesday, Palo Alto Networks stated that a flaw in the PAN-OS software allows an unauthorized attacker to launch a denial-of-service (DoS) attack on the firewall. The firewall goes into maintenance mode after multiple efforts to cause this problem.
The following versions are impacted by the problem, which was found and reported by an anonymous outside researcher read more about Palo Alto Fixes GlobalProtect DoS Flaw That Can Crash Firewalls Without Login.
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