vulnerability
Palo Alto Networks PAN-OS: CVE-2026-0227: PAN-OS: Firewall Denial of Service (DoS) in GlobalProtect Gateway and Portal
| Severity | CVSS | Published | Added | Modified |
|---|---|---|---|---|
| 8 | (AV:N/AC:L/Au:N/C:N/I:N/A:C) | Jan 14, 2026 | Jan 15, 2026 | Mar 25, 2026 |
Severity
8
CVSS
(AV:N/AC:L/Au:N/C:N/I:N/A:C)
Published
Jan 14, 2026
Added
Jan 15, 2026
Modified
Mar 25, 2026
Description
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.
Solution
palo-alto-networks-pan-os-upgrade-latest
Rapid7 Labs
2026 Global Threat Landscape Report
The predictive window has collapsed. Exploitation follows disclosure in days. See how attackers are accelerating and how to stay ahead.