CVE-2024-3393: Palo Alto Networks PAN-OS Malicious DNS Packet Vulnerability
Reference page built from the source records below, each shown as its source publishes it. Dataset version ref-b8e2f675164d, updated 2026-11-02T23:39:54.475Z.
CISA Known Exploited Vulnerabilities
- Name
- Palo Alto Networks PAN-OS Malicious DNS Packet Vulnerability
- Vendor
- Palo Alto Networks
- Product
- PAN-OS
- Added to the catalog
- 2024-12-30
- Due date for US federal agencies
- 2025-01-20
- Weaknesses
- CWE-754
- Catalog version
- 2026.10.30
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 (CISA)
Apply mitigations per vendor instructions or discontinue use of the product if mitigations are unavailable.
Ransomware use: CISA does not mark known use of this vulnerability in ransomware campaigns.
Links in CISA's notes
Read on 2026-11-02T23:39:54.475Z under licence cisa-kev-cc0@b0067899 from https://www.cisa.gov/sites/default/files/feeds/known_exploited_vulnerabilities.json
NVD analysis
- Status
- Analyzed
- Published
- 2024-12-27T10:15:17.270
- Last modified
- 2026-06-17T07:44:11.227
- Weaknesses
- CWE-754
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.
| Metric | Score | Severity | Vector | Scored by |
|---|---|---|---|---|
| CVSS 4.0 | 8.7 | HIGH | 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 | [email protected] (Secondary) |
| CVSS 3.1 | 7.5 | HIGH | CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H | [email protected] (Primary) |
References
- https://security.paloaltonetworks.com/CVE-2024-3393 (Vendor Advisory)
- https://www.cisa.gov/known-exploited-vulnerabilities-catalog?field_cve=CVE-2024-3393 (US Government Resource)
This product uses the NVD API but is not endorsed or certified by the NVD.
Read on 2026-11-02T23:42:15.686Z under licence nvd-api-terms-of-use@ff2a5288 from https://services.nvd.nist.gov/rest/json/cves/2.0?cveId=CVE-2024-3393
CVE record
- Title (CNA)
- PAN-OS: Firewall Denial of Service (DoS) in DNS Security Using a Specially Crafted Packet
- Assigner
- palo_alto
- State
- PUBLISHED
- Published
- 2024-12-27T09:44:24.538Z
- Updated
- 2025-10-21T22:55:33.618Z
- Problem types
- CWE-754 Improper Check for Unusual or Exceptional Conditions
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.
References
Read on 2026-11-03T02:06:27.090Z under licence cve-terms-of-use@81bfa2f3 from https://raw.githubusercontent.com/CVEProject/cvelistV5/main/cves/2024/3xxx/CVE-2024-3393.json
Defensive techniques (MITRE D3FEND)
D3FEND maps these defensive techniques to the weakness (CWE) that NVD lists for this CVE, through the digital artifacts the weakness affects. D3FEND does not say they stop this vulnerability.
CWE-754: Improper Check for Unusual or Exceptional Conditions
- Harden: Domain Logic Validation (acts on Subroutine)
- Harden: Variable Type Validation (acts on Pointer Dereferencing Function)
- Model: Software Inventory (acts on Software)
- Harden: Credential Scrubbing (acts on Subroutine)
- Isolate: Application-based Process Isolation (acts on Subroutine)
- Restore: Restore Software (acts on Software)
- Harden: Trusted Library (acts on Subroutine)
- Harden: Variable Initialization (acts on Subroutine)
- Model: Asset Vulnerability Enumeration (acts on Software)
- Harden: Null Pointer Checking (acts on Pointer Dereferencing Function)
- Harden: Software Update (acts on Software)
D3FEND ontology version 1.6.0.
Read on 2026-11-03T00:02:46.929Z under licence d3fend-terms-of-use@f98cbc7e from https://d3fend.mitre.org/api/weakness/cwe/CWE-754.json
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Sources and licences
CISA
Source: CISA Catalog of Known Exploited Vulnerabilities, version 2026.10.30, CC0 1.0. Use of this data does not imply endorsement by CISA or DHS.
National Vulnerability Database (NIST)
This product uses the NVD API but is not endorsed or certified by the NVD.
NVD API Terms of Use (NIST publications in the public domain, 17 U.S.C. 105)
CVE Program, The MITRE Corporation
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MITRE D3FEND
MITRE D3FEND™ knowledge graph. © 2025 The MITRE Corporation.
"The MITRE Corporation (MITRE) hereby grants you a non-exclusive, royalty-free license to use D3FEND for research, development, and commercial purposes. Any copy you make for such purposes is authorized provided that you reproduce MITRE's copyright designation and this license in any such copy." Terms: https://d3fend.mitre.org/tou/MITRE D3FEND Terms of Use (site + knowledge graph); source repo MIT
Cite this page
Dragons Eye Ransomware Tracker, "CVE-2024-3393: Palo Alto Networks PAN-OS Malicious DNS Packet Vulnerability",
entity page, dataset version ref-b8e2f675164d, updated 2026-11-02T23:39:54.475Z,
https://ransomware-tracker.com/cve/CVE-2024-3393 (accessed 2026-11-03).
Underlying source: CISA Catalog of Known Exploited Vulnerabilities, version 2026.10.30.
Underlying source: National Vulnerability Database (NIST), CVE API 2.0, record last modified 2026-06-17T07:44:11.227.
Underlying source: CVE List (CVE Program, The MITRE Corporation), record updated 2025-10-21T22:55:33.618Z.
Underlying source: MITRE D3FEND, ontology version 1.6.0.
Pages change. The dataset version identifies the data, but no archive of old versions is kept, so this citation cannot be replayed later.