CVE-2021-3064: Palo Alto Networks PAN-OS

Critical severity, CVSS 9.8. EPSS: 20.1% chance of exploitation in the next 30 days.

A memory corruption vulnerability exists in Palo Alto Networks GlobalProtect portal and gateway interfaces that enables an unauthenticated network-based attacker to disrupt system processes and potentially execute arbitrary code with root privileges. The attacker must have network access to the GlobalProtect interface to exploit this issue. This issue impacts PAN-OS 8.1 versions earlier than PAN-OS 8.1.17. Prisma Access customers are not impacted by this issue.

Affected products

• Palo Alto Networks PAN-OS: from 8.1.0, before 8.1.17 (fixed in 8.1.17)

Published 2021-11-10. Last modified 2026-06-17.