---
id: CVE-2026-0321
title: >-
  Denial of service vulnerabilities in Palo Alto Networks PAN-OS® software allow
  an unauthenticated attacker with network access to cause a denial of service
  (DoS) condition by sending specially crafted network traffic to or through a
  data…
summary: >-
  Denial of service vulnerabilities in Palo Alto Networks PAN-OS® software allow
  an unauthenticated attacker with network access to cause a denial of service
  (DoS) condition by sending specially crafted network traffic to or through a
  data…
severity: medium
cwe:
  - CWE-754
published: '2026-10-14'
updated: '2026-10-14'
sourceUpdated: '2026-10-14T20:17:26.887'
source: NVD
sourceUrl: 'https://nvd.nist.gov/vuln/detail/CVE-2026-0321'
references:
  - url: 'https://security.paloaltonetworks.com/CVE-2026-0321'
    label: psirt@paloaltonetworks.com
tags:
  - nvd
  - cve.org
ingestedAt: '2026-10-14T20:53:12.374Z'
vendor: Palo Alto Networks
product: Cloud NGFW
affected:
  - cloud_ngfw
  - PAN-OS >= 12.2.0 < 12.2.4
  - PAN-OS >= 12.1.0 < 12.1.10-h2
  - PAN-OS >= 11.2.0 < 11.2.16
  - PAN-OS >= 11.1.0 < 11.1.16-h3
  - PAN-OS >= 10.2.0 < 10.2.18-h12
  - prisma_access >= 12.1.0 < 12.1.7-h8
  - prisma_access >= 11.2.0 < 11.2.7-h21
  - prisma_access >= 10.2.0 < 10.2.10-h41
cvss: 6.6
cvssVector: >-
  CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N/E:U/AU:N/R:U/V:D/RE:M/U:Amber
cvssSource: cna
---

## Overview

Denial of service vulnerabilities in Palo Alto Networks PAN-OS® software allow an unauthenticated attacker with network access to cause a denial of service (DoS) condition by sending specially crafted network traffic to or through a dataplane interface. Repeated attempts to trigger this condition result in the firewall entering maintenance mode.



Cloud NGFW and Panorama are not affected by this vulnerability.

## Remediation

Refer to the linked advisories for vendor-supplied fixes and affected version ranges.