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Palo Alto firewall appliance shown with a red zero-day warning, hacker silhouette, and the text “Palo Alto Firewall Zero-Day” and “CVE-2026-0300.”

Article

Palo Alto Firewall Zero-Day Shows Why Edge Devices Are Prime Targets

A critical Palo Alto Networks PAN-OS zero-day, tracked as CVE-2026-0300, was exploited for nearly a month before patches were ready. The flaw affects the User-ID Authentication Portal and highlights why internet-facing firewalls, VPNs, routers, and other edge devices remain high-value targets for advanced attackers.

5 min read WebNovare

A critical zero-day in Palo Alto Networks PAN-OS is the latest reminder that internet-facing edge devices have become one of the most valuable targets in cybersecurity. The vulnerability, tracked as CVE-2026-0300, affects the PAN-OS User-ID Authentication...