CVE-2026-0300: Palo Alto PAN-OS Buffer Overflow Under Active Exploitation — What Security Teams Must Do Now
If your Palo Alto Networks firewalls run PAN-OS and you’ve ever enabled the User-ID Authentication Portal, your window to act is now. A critical buffer overflow flaw, tracked as CVE-2026-0300, is being exploited in the wild. The good news: the scope is narrower than a blanket “all PAN-OS” alert. The bad news: if the portal…