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CVE-2026-0227

Severity CVSS v4.0:
MEDIUM
Type:
Unavailable / Other
Publication date:
15/01/2026
Last modified:
06/02/2026

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.

Impact

Vector 4.0
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 CVSS v4.0 Severity and Metrics:

Base Score: 6.60 MEDIUM
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

Attack Vector (AV): Network
Attack Complexity (AC): Low
Attack Requirements (AT): None
Privileges Required (PR): None
User Interaction (UI): None
Confidentiality (VC): None
Integrity (VI): None
Availability (VA): High
Confidentiality (SC): None
Integrity (SI): None
Availability (SA): None
Automatable (AU): Yes
Recovery (R): User
Value Density (V): Diffuse
Vulnerability Response Effort (RE): Moderate
Provider Urgency (U): Amber
Exploit Maturity (E): Unreported

Base Score 4.0
6.60
Severity 4.0
MEDIUM
Vector 3.x
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H CVSS v3.1 Severity and Metrics:

Base Score: 7.50 HIGH
Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H

Attack Vector (AV): Network
Attack Complexity (AC): Low
Privileges Required (PR): None
User Interaction (UI): None
Scope (S): Unchanged
Confidentiality (C): None
Integrity (I): None
Availability (A): High

Base Score 3.x
7.50
Severity 3.x
HIGH

Vulnerable products and versions

CPE From Up to
cpe:2.3:o:paloaltonetworks:pan-os:*:*:*:*:*:*:*:* 10.1.0 (including) 10.1.14 (excluding)
cpe:2.3:o:paloaltonetworks:pan-os:*:*:*:*:*:*:*:* 10.2.0 (including) 10.2.7 (excluding)
cpe:2.3:o:paloaltonetworks:pan-os:*:*:*:*:*:*:*:* 10.2.8 (including) 10.2.10 (excluding)
cpe:2.3:o:paloaltonetworks:pan-os:*:*:*:*:*:*:*:* 10.2.11 (including) 10.2.13 (excluding)
cpe:2.3:o:paloaltonetworks:pan-os:*:*:*:*:*:*:*:* 10.2.14 (including) 10.2.16 (excluding)
cpe:2.3:o:paloaltonetworks:pan-os:*:*:*:*:*:*:*:* 11.1.0 (including) 11.1.4 (excluding)
cpe:2.3:o:paloaltonetworks:pan-os:*:*:*:*:*:*:*:* 11.1.5 (including) 11.1.6 (excluding)
cpe:2.3:o:paloaltonetworks:pan-os:*:*:*:*:*:*:*:* 11.1.7 (including) 11.1.10 (excluding)
cpe:2.3:o:paloaltonetworks:pan-os:*:*:*:*:*:*:*:* 11.1.11 (including) 11.1.13 (excluding)
cpe:2.3:o:paloaltonetworks:pan-os:*:*:*:*:*:*:*:* 11.2.0 (including) 11.2.4 (excluding)
cpe:2.3:o:paloaltonetworks:pan-os:*:*:*:*:*:*:*:* 11.2.5 (including) 11.2.7 (excluding)
cpe:2.3:o:paloaltonetworks:pan-os:*:*:*:*:*:*:*:* 11.2.8 (including) 11.2.10 (excluding)
cpe:2.3:o:paloaltonetworks:pan-os:10.1.14:-:*:*:*:*:*:*
cpe:2.3:o:paloaltonetworks:pan-os:10.1.14:h10:*:*:*:*:*:*
cpe:2.3:o:paloaltonetworks:pan-os:10.1.14:h11:*:*:*:*:*:*

To consult the complete list of CPE names with products and versions, see this page


References to Advisories, Solutions, and Tools