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Unrated severityCISA KEVNVD Advisory· Published Dec 27, 2024· Updated Oct 21, 2025

PAN-OS: Firewall Denial of Service (DoS) in DNS Security Using a Specially Crafted Packet

CVE-2024-3393

Description

A Denial of Service vulnerability in the DNS Security feature of Palo Alto Networks PAN-OS software allows an unauthenticated attacker to send a malicious packet through the data plane of the firewall that reboots the firewall. Repeated attempts to trigger this condition will cause the firewall to enter maintenance mode.

AI Insight

LLM-synthesized narrative grounded in this CVE's description and references.

Affected products

4
  • Paloaltonetworks/Pan OSv53 versions
    cpe:2.3:o:paloaltonetworks:pan-os:11.2.2:h2:*:*:*:*:*:*+ 2 more
    • cpe:2.3:o:paloaltonetworks:pan-os:11.2.2:h2:*:*:*:*:*:*range: 11.2.0
    • (no CPE)
    • (no CPE)range: 11.2.0
  • Paloaltonetworks/Cloud NGFWcpe-rescue
    Range: All

Patches

Vulnerability mechanics

References

1

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