ACTIVELY EXPLOITED
CVE-2024-3393: Palo Alto Networks PAN-OS Malicious DNS Packet Vulnerability
| Vendor | Palo Alto Networks |
|---|---|
| Product | PAN-OS |
| Actively exploited | Yes |
| Added to CISA KEV | 30 Dec 2024 |
| CISA federal deadline | 20 Jan 2025 |
| Weakness (CWE) | CWE-754 |
Required action (CISA's text)
Apply mitigations per vendor instructions or discontinue use of the product if mitigations are unavailable.
Description (NVD)
Palo Alto Networks PAN-OS contains a vulnerability in parsing and logging malicious DNS packets in the DNS Security feature that, when exploited, allows an unauthenticated attacker to remotely reboot the firewall. Repeated attempts to trigger this condition will cause the firewall to enter maintenance mode.
SOURCES
Other Palo Alto Networks flaws
- CVE-2026-0322: Palo Alto Networks PAN-OS Code Injection Vulnerability
- CVE-2026-0257: Palo Alto Networks PAN-OS Authentication Bypass Vulnerability
- CVE-2026-0300: Palo Alto Networks PAN-OS Out-of-bounds Write Vulnerability
- CVE-2025-0111: Palo Alto Networks PAN-OS File Read Vulnerability
- CVE-2025-0108: Palo Alto Networks PAN-OS Authentication Bypass Vulnerability
Data from NVD, CISA KEV, FIRST EPSS and vendor advisories. Updated 10 Nov 2026.