Qilin Ransomware Gang Exploits Critical Palo Alto GlobalProtect VPN Flaw in Active Attacks
The Qilin ransomware gang is actively exploiting a critical authentication bypass flaw in Palo Alto Networks' PAN-OS GlobalProtect VPN, according to Arctic Wolf, which investigated multiple domain-wide ransomware deployments traced to CVE-2026-0257 during June 2026.