Medium 6.6Published Jan 15, 2026

CVE-2026-0227PAN-OS: Firewall Denial of Service (DoS) in GlobalProtect Gateway and Portal

Updated under an hour ago (Oct 26, 2026, 1:30 PM ET)

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It affects Palo Alto Networks Cloud NGFW and 4 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

A vulnerability in Palo Alto Networks PAN-OS software enables an unauthenticated attacker to cause a denial of service (DoS) to the firewall. Repeated attempts to trigger this issue results in the firewall entering into maintenance mode.

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:Y/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: Analyzed
Record last updated: Jan 30, 2026
First seen by InfoSec Signals: Oct 9, 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 12.1.2 before 12.1.4, 12.1.3-h3; fixed at 12.1.4, fixed at 12.1.3-h3; from 11.2.0 before 11.2.10-h2, 11.2.7-h8, 11.2.4-h15; fixed at 11.2.10-h2, fixed at 11.2.7-h8, fixed at 11.2.4-h15; from 11.1.0 before 11.1.13, 11.1.10-h9, 11.1.6-h23, 11.1.4-h27; fixed at 11.1.13, fixed at 11.1.10-h9, fixed at 11.1.6-h23, fixed at 11.1.4-h27; from 10.2.0 before 10.2.18-h1, 10.2.16-h6, 10.2.13-h18, 10.2.10-h30, 10.2.7-h32; fixed at 10.2.18-h1, fixed at 10.2.16-h6, fixed at 10.2.13-h18, fixed at 10.2.10-h30, fixed at 10.2.7-h32; from 10.1.0 before 10.1.14-h20; fixed at 10.1.14-h20	CNA record
Palo Alto Networks Prisma Access palo_alto_networks:prisma_access (from the name)	from 11.2 before 11.2.7-h8; fixed at 11.2.7-h8; from 10.2 before 10.2.10-h29, 10.2.4-h43; fixed at 10.2.10-h29, fixed at 10.2.4-h43	CNA record
paloaltonetworks pan-os paloaltonetworks:pan-os	from 10.1.0 before 10.1.14; from 10.2.0 before 10.2.7; from 10.2.8 before 10.2.10; from 10.2.11 before 10.2.13; from 10.2.14 before 10.2.16; from 11.1.0 before 11.1.4; from 11.1.5 before 11.1.6; from 11.1.7 before 11.1.10; and 110 more ranges	NVD
paloaltonetworks prisma_access paloaltonetworks:prisma_access	all versions	NVD

References

References

https://security.paloaltonetworks.com/CVE-2026-0227	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.