TT-CSIRT – 456.08.05.26 – CYBERSECURITY ADVISORY: Critical Palo Alto Networks PAN-OS Vulnerability (CVE-2026-0300)
CVE-2026-0300 is a critical buffer overflow vulnerability affecting the User-ID™ Authentication Portal (also known as the Captive Portal) service in PAN-OS. Successful exploitation may allow an unauthenticated remote attacker to execute arbitrary code with root privileges on affected PA-Series and VM-Series firewalls through specially crafted packets. Palo Alto Networks has confirmed that this vulnerability is […]