CVE-2026-0321

published 2026-10-14

CVE-2026-0321: Denial of service vulnerabilities in Palo Alto Networks PAN-OS® software allow an unauthenticated attacker with network access to cause a denial of service…

Priority P3 43 medium 6.6 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 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 D RE M U Amber

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.

Affected

11 ranges

Vendor	Product	Version range	Fixed in
palo_alto_networks	pan-os	>= 10.2.0 < 10.2.18-h12	10.2.18-h12
palo_alto_networks	pan-os	>= 11.1.0 < 11.1.16-h3	11.1.16-h3
palo_alto_networks	pan-os	>= 11.2.0 < 11.2.16	11.2.16
palo_alto_networks	pan-os	>= 12.1.0 < 12.1.10-h2	12.1.10-h2
palo_alto_networks	pan-os	>= 12.2.0 < 12.2.4	12.2.4
palo_alto_networks	prisma_access	>= 10.2.0 < 10.2.10-h41	10.2.10-h41
palo_alto_networks	prisma_access	>= 11.2.0 < 11.2.7-h21	11.2.7-h21
palo_alto_networks	prisma_access	>= 12.1.0 < 12.1.7-h8	12.1.7-h8
paloalto	cloud_ngfw	—	—
paloalto	pan-os	—	—
paloalto	prisma_access	—	—

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