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critical advisory

Palo Alto PAN-OS Unauthenticated Root RCE via User-ID Authentication Portal

CVE-2026-0300 is a critical vulnerability in Palo Alto PAN-OS User-ID Authentication Portal that allows unauthenticated attackers to execute arbitrary code with root privileges on PA-Series and VM-Series firewalls configured to use the portal, with limited exploitation observed.

PA-Series +18 cve-2026-0300 palo alto pan-os rce network
2r 1t 1i