CVE-2026-0227 MEDIUM

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

Vendor Palo Alto Networks
Product PAN-OS
Weakness CWE-754
Published January 15, 2026
Last update January 30, 2026
View on NVD All CVEs

CVSS base score

6.6/10
Attack vector Network
Attack complexity Low
Privileges required None
User interaction None
Confidentiality —
Integrity —

CVSS vector

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

What the vulnerability does

01Description

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.

Key dates

02Disclosure timeline

January 15, 2026 CVE published
January 30, 2026 Record updated