CISA KEV entry

CVE-2024-3393Palo Alto Networks PAN-OS Malicious DNS Packet Vulnerability

Palo Alto Networks PAN-OS. Added to the CISA Known Exploited Vulnerabilities catalogue on 30 December 2024.

Data status: a source is stale

Last synced 5 November 2026, 11:38 UTC CISA catalogue version 2026.11.04 (released 4 November 2026) 1,768 entries Updated manually

Date added: 2024-12-30
Federal due date: 2025-01-20 21 days after it was added; passed at the sync of 2026-11-05
Known ransomware use: Unknown
Forensic triage (BOD 26-04): No
CVSS: 8.7 High CVSS 4.0, scored by psirt@paloaltonetworks.com
EPSS: 29.12% percentile 98.1, scored 2026-11-04
CISA SSVC: Exploitation active, automatable yes, technical impact partial
NVD status: Analyzed published 2024-12-27, 3 days before the KEV listing

BOD 26-04 remediation window

With CISA's SSVC answers for this CVE (automatable: yes, technical impact: partial), BOD 26-04 Table 1 gives 3 days on a publicly exposed asset (row 2) and 14 days on an asset that is not publicly exposed (row 10) ^S06. The catalogue due date, 21 days after the date added, was set before BOD 26-04 took effect on 10 June 2026 ^S06. The directive binds US federal civilian executive branch agencies only.

What CISA says

Short description

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.

Required action

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

Notes

https://security.paloaltonetworks.com/CVE-2024-3393 ; https://nvd.nist.gov/vuln/detail/CVE-2024-3393

CWE in the catalogue

CWE-754

Official links

CISA KEV catalogue entry cisa.gov
NVD record nvd.nist.gov

Vendor advisory and patch links

References NVD tags Vendor Advisory or Patch, exactly as NVD lists them.

https://security.paloaltonetworks.com/CVE-2024-3393 Vendor Advisory

Links in CISA's notes

NVD details

CWE (NVD): CWE-754 by psirt@paloaltonetworks.com
CVSS vector: CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:L/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:N/R:U/V:C/RE:M/U:Amber
CVSS versions in NVD: V31, V40
Last modified in NVD: 2026-06-17T07:44:11.227

Where each value comes from

Source and fetch time of every field on this page
Field	Source	Fetched, UTC	State
Catalogue fields	CISA KEV JSON, version 2026.11.04	2026-11-05 11:38	current
NVD published, status, CVSS, CWE, vendor links	NVD CVE API 2.0; CVSS: NVD (psirt@paloaltonetworks.com)	2026-11-03 12:37	current at 2026-11-05 11:38
EPSS	FIRST EPSS API, scores of 2026-11-04	2026-11-05 11:38	current
CISA SSVC	CISA ADP (via NVD), record of 2025-01-09	2026-11-03 12:37	current

This product uses data from the NVD API but is not endorsed or certified by the NVD. CISA does not endorse Sysprobs. Methodology.

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