Medium 6.6Published Oct 14, 2026

CVE-2026-0321PAN-OS: Denial of Service (DoS) Vulnerabilities in Network Services

Updated under an hour ago (Oct 28, 2026, 4:20 AM ET)

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It affects Palo Alto Networks Cloud NGFW and 2 other products. Add what you run to find out whether that includes you.

No exploitation reported and no EPSS estimate yet.

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Every CVE for Palo Alto Networks Cloud NGFW

Exploited in the last 30 days

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.

CVSS: 6.6 MEDIUM (v4.0, CNA)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
Weakness (CWE): CWE-754
Known exploited: Not in CISA's KEV catalog
EPSS (exploitation in the next 30 days): Not loaded for this CVE
Assigned by: palo_alto
NVD analysis: Awaiting Analysis
Record last updated: Oct 15, 2026
First seen by InfoSec Signals: Oct 14, 2026

Affected products

Affected products

Palo Alto Networks Cloud NGFW palo_alto_networks:cloud_ngfw (from the name)	all versions not affected	CNA record
Palo Alto Networks PAN-OS palo_alto_networks:pan-os	from 12.2.0 before 12.2.4; fixed at 12.2.4; from 12.1.0 before 12.1.10-h2; fixed at 12.1.10-h2, fixed at 12.1.7-h8, fixed at 12.1.4-h12; from 11.2.0 before 11.2.16; fixed at 11.2.16, fixed at 11.2.13-h3, fixed at 11.2.10-h15, fixed at 11.2.7-h21, fixed at 11.2.4-h22; from 11.1.0 before 11.1.16-h3; fixed at 11.1.16-h3, fixed at 11.1.13-h15, fixed at 11.1.10-h35, fixed at 11.1.7-h11, fixed at 11.1.6-h39, fixed at 11.1.4-h37; from 10.2.0 before 10.2.18-h12; fixed at 10.2.18-h12, fixed at 10.2.16-h11, fixed at 10.2.13-h26, fixed at 10.2.10-h41, fixed at 10.2.7-h38	CNA record
Palo Alto Networks Prisma Access palo_alto_networks:prisma_access (from the name)	from 12.1.0 before 12.1.7-h8; fixed at 12.1.7-h8; from 11.2.0 before 11.2.7-h21; fixed at 11.2.7-h21; from 10.2.0 before 10.2.10-h41; fixed at 10.2.10-h41	CNA record

References

References

https://security.paloaltonetworks.com/CVE-2026-0321	vendor-advisory

The CVE record on cve.org NVD's entry

The CVE record is authoritative. Products marked “from the name” were identified from the CNA's free-text names, not a CPE, and are matched less certainly. This product uses the NVD API but is not endorsed or certified by the NVD.