CVE-2024-3384: Palo Alto Networks PAN-OS

High severity, CVSS 7.5. EPSS: 0.9% chance of exploitation in the next 30 days.

A vulnerability in Palo Alto Networks PAN-OS software enables a remote attacker to reboot PAN-OS firewalls when receiving Windows New Technology LAN Manager (NTLM) packets from Windows servers. Repeated attacks eventually cause the firewall to enter maintenance mode, which requires manual intervention to bring the firewall back online.

Affected products

• Palo Alto Networks PAN-OS: from 8.1.0, before 8.1.24 (fixed in 8.1.24); from 9.0.0, before 9.0.17 (fixed in 9.0.17); from 9.1.0, before 9.1.15 (fixed in 9.1.15); from 10.0.0, before 10.0.12 (fixed in 10.0.12); version 9.1.15 only

Published 2024-04-10. Last modified 2026-06-17.