CVE-2026-0321
Medium
Description
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.
SeverityMedium
CVSS6.6
Exploit probability—
Product
Palo Alto Networks Pan-os
PublishedOct 14, 2026
First seenOct 14, 2026
Weakness typeCWE-754CWE-754
How to fix
Update
- palo_alto_networks pan-os12.2.4, 12.1.10-h2, 11.2.16, 11.1.16-h3, 10.2.18-h12 or later
- Palo Alto Networks Prisma Access12.1.7-h8, 11.2.7-h21, 10.2.10-h41 or later
Vendor advisories
Affected products
| Product | Affected versions | Fixed in |
|---|---|---|
| palo_alto_networks pan-os | 12.2.0 ≤ v < 12.2.4, 12.1.0 ≤ v < 12.1.10-h2, 11.2.0 ≤ v < 11.2.16, 11.1.0 ≤ v < 11.1.16-h3, 10.2.0 ≤ v < 10.2.18-h12 | 12.2.4, 12.1.10-h2, 11.2.16, 11.1.16-h3, 10.2.18-h12 |
| Palo Alto Networks Prisma Access | 12.1.0 ≤ v < 12.1.7-h8, 11.2.0 ≤ v < 11.2.7-h21, 10.2.0 ≤ v < 10.2.10-h41 | 12.1.7-h8, 11.2.7-h21, 10.2.10-h41 |
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