Critical Palo Alto PAN-OS Vulnerability Actively Exploited For Remote Code Execution (RCE)

Cybersecurity firm Palo Alto Networks has issued an urgent security advisory warning customers of an actively exploited zero-day vulnerability affecting its widely deployed firewall operating system, PAN-OS. The flaw, identified as CVE-2026-0300, has been classified as critical, with CVSS score of 9.3 and allows attackers to gain full control of affected systems without authentication.