Palo Alto Networks Patches Zero-Day Vulnerability Exploited in US Hospitals
β’ Palo Alto Networks issued emergency patches on April 20, 2026, for a zero-day flaw (CVE-2026-4123) in PAN-OS firewalls, exploited against 50+ US healthcare providers. β’ Attackers gained root access via malicious updates, potentially exposing patient data of millions. β’ CISA added the vuln to KEV catalog, urging immediate updates; no ransomware deployed yet.
Read original Β· wired.com