Palo Alto Networks PAN-OS Malicious DNS Packet Vulnerability

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• cpe paloaltonetworks/pan-os10.1.14
• cpe paloaltonetworks/pan-os10.2.8
• cpe paloaltonetworks/prisma accessversion unspecified
• vendor Palo Alto Networks PAN-OSversion unspecified

How to fix CVE-2024-3393

• Recommended remediation

  Apply mitigations per vendor instructions or discontinue use of the product if mitigations are unavailable. CISA due date Jan 20, 2025.

• Official advisories

  • CISA KEV · cisa.gov
  • CVE.org · cve.org
  • FIRST EPSS · first.org
  • NIST NVD · nvd.nist.gov
  • VulnCheck KEV · vulncheck.com

What to do

Three questions, each answered from this record only. Confirm the vendor advisory before you patch.

Code

The project this record applies to. Exploit listings stay in References.

No public source repository is identified for this product.

Timeline

Detection, updates, and resolution for this record.

1. Dec 27, 2024 · Catalog

   Detected

   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.

2. Dec 30, 2024 · CISA KEV

   Known exploited

   Apply mitigations per vendor instructions or discontinue use of the product if mitigations are unavailable.

3. Jan 20, 2025 · CISA KEV

   Remediation due

   Apply mitigations per vendor instructions or discontinue use of the product if mitigations are unavailable.

4. Jun 17, 2026 · Catalog

   Updated

   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.

Sources

• CISA KEVConfirmed exploitationCVE-2024-3393

  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.

  cisa.gov
• CVE.orgVulnerability recordCVE-2024-3393

  Official CVE identifier

  cve.org
• FIRST EPSSExploitation probabilityCVE-2024-3393

  30-day exploitation probability 29.1%

  first.org
• NIST NVDVulnerability recordCVE-2024-3393

  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 cau

  nvd.nist.gov
• VulnCheck KEVConfirmed exploitationCVE-2024-3393

  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 firewal

  vulncheck.com

References

• CISA note · nvd.nist.gov
• CISA note · security.paloaltonetworks.com
• US Government Resource · cisa.gov
• VulnCheck exploitation evidence · cisa.gov

Freshness

Last verified in this catalog Oct 17, 2026. Significant claims (KEV, EPSS, CVSS, affected ranges) come from the source rows above — open the original publisher for the authoritative advisory.