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CVE-2026-0321

Cloud NGFW: PAN-OS: Denial of Service (DoS) Vulnerabilities in Network Services

Palo Alto Networks Cloud NGFW
Open in ThreatlineRecord JSON
CVSS
6.6Medium
ExploitationNo known exploitationNot in CISA KEV, which does not prove it is unexploitedCISA KEV
Exploit odds (EPSS)0.33%Chance of exploitation activity in the next 30 days, higher than 24% of CVEs. Scored 23 Oct 2026FIRST EPSS
Fixed in12.2.4Also 12.1.10-h2, 11.2.16 and 5 moreCVE List
Published14 Oct 2026Updated 15 Oct 2026CVE List

What fixes it

Show all 8 fixed versions

A fixed version on one release line is not the upgrade target for every line. Check your exact version and any vendor backports.

Vendor and government advisories 1

Vendors that say their products are affected, and agencies that issued alerts. Check each for the fixed release of the product you run.

Reports 1

1 outlet mention it. Reports are not confirmation; each links to its source.

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.

Text from CVE List

Affected versions 9

  • Cloud NGFWunaffected: AllCVE List
  • PAN-OSaffected: 12.2.0 before 12.2.4CVE List
  • PAN-OSaffected: 12.1.0 before 12.1.10-h2CVE List
  • PAN-OSaffected: 11.2.0 before 11.2.16CVE List
  • PAN-OSaffected: 11.1.0 before 11.1.16-h3CVE List
  • PAN-OSaffected: 10.2.0 before 10.2.18-h12CVE List
  • Prisma Accessaffected: 12.1.0 before 12.1.7-h8CVE List
  • Prisma Accessaffected: 11.2.0 before 11.2.7-h21CVE List
  • Prisma Accessaffected: 10.2.0 before 10.2.10-h41CVE List

References 1