CISA has warned about active exploitation of a vulnerability impacting the GlobalProtect portal and gateway of Palo Alto Networks’ PAN-OS software. Tracked as CVE-2026-0257, the vulnerability may allow a remote unauthenticated attacker to successfully establish a VPN connection through the GlobalProtect gateway of an affected appliance. Palo Alto has also mentioned in their advisory that they are aware of limited exploit attempts on unpatched PAN-OS devices without … Continue reading “CISA Warns of PAN-OS GlobalProtect Authentication Bypass Vulnerability (CVE-2026-0257)”