Palo Alto Networks warns of firewall RCE zero-day exploited in attacks
Palo Alto Networks warned customers today that a critical-severity unpatched vulnerability in the PAN-OS User-ID Authentication Portal is being exploited in attacks. Also known as the Captive Portal, the User-ID Authentication Portal is a PAN-OS security feature that authenticates users whose identities cannot be automatically mapped by the firewall. Tracked as CVE-2026-0300, this zero-day bug stems from […]





