What’s Vulnerable › Vulnerabilities

CVE-2024-2551: PAN-OS: Firewall Denial of Service (DoS) Using a Specially Crafted Packet

• Severity: high (CVSS 7.5 v3.1)
• Exploited in the wild: not listed in CISA KEV
• EPSS: 0.5% probability of exploitation in the next 30 days
• Public exploit or detection template: none known
• Published: 2024-11-14 · updated 2026-06-17
• Weakness: CWE-476

Description

A null pointer dereference vulnerability in Palo Alto Networks PAN-OS software enables an unauthenticated attacker to stop a core system service on the firewall by sending a crafted packet through the data plane that causes a denial of service (DoS) condition. Repeated attempts to trigger this condition result in the firewall entering maintenance mode.

Affected products

• Palo Alto Networks PAN-OS: from 10.1.0 before 10.1.14; from 10.2.0 before 10.2.4; from 11.0.0 before 11.0.5; 10.2.4-h2, 10.2.4-h3, 10.2.4-h4; 10.2.4 — fixed in 10.1.14, 10.2.4, 11.0.5
• Palo Alto Networks PAN-OS: from 11.0.0 before 11.0.5; from 10.2.0 before 10.2.4-h6; from 10.1.0 before 10.1.14 — fixed in 11.0.5, 10.2.4-h6, 10.2.5, 10.1.14

How to fix

Upgrade to a fixed version: Palo Alto Networks PAN-OS 10.1.14, 10.2.4, 11.0.5; Palo Alto Networks PAN-OS 11.0.5, 10.2.4-h6, 10.2.5, 10.1.14. Check the vendor advisory for mitigations.

References

• https://security.paloaltonetworks.com/CVE-2024-2551

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