State-sponsored hackers likely behind zero-day attacks on Palo Alto firewalls

Palo Alto Networks believes the in-the-wild exploitation of a zero-day vulnerability (CVE-2026-0300) in its firewalls is likely the work of state-sponsored threat actors. A flaw with no patch (yet) CVE-2026-0300 is a buffer overflow vulnerability in the User-ID Authentication Portal service of Palo