CVE-2026-0227NVD

Vulnerability Summary

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.

Severity Level

MEDIUM(6.6)

Published Date

Jan 15, 2026

Last Modified

Feb 6, 2026

Exploitation Status

No confirmed exploitation yet

EPSS Score (30-Day)

Data Pending

Root Weakness (CWE)

CWE-754: Unknown/Unlisted Weakness ↗

Refer to the official MITRE database for detailed architectural specifications regarding this weakness.

CVSS v4.0 Base Metrics — Score 6.6 (MEDIUM)

Attack VectorNetwork

Attack ComplexityLow

Attack RequirementsNone

Privileges RequiredNone

User InteractionNone

Confidentiality (Vulnerable System)None

Integrity (Vulnerable System)None

Availability (Vulnerable System)High

Confidentiality (Subsequent System)None

Integrity (Subsequent System)None

Availability (Subsequent System)None

CVSS v3.1 Base Metrics — Score 7.5 (HIGH)

Attack VectorNetwork

Attack ComplexityLow

Privileges RequiredNone

User InteractionNone

ScopeUnchanged

ConfidentialityNone

IntegrityNone

AvailabilityHigh

Affected & Patched Versions

Affected Versions

Paloaltonetworks Pan-os >= 10.1.0 and < 10.1.14
Paloaltonetworks Pan-os >= 10.2.0 and < 10.2.7
Paloaltonetworks Pan-os >= 10.2.8 and < 10.2.10
Paloaltonetworks Pan-os >= 10.2.11 and < 10.2.13
Paloaltonetworks Pan-os >= 10.2.14 and < 10.2.16
Paloaltonetworks Pan-os >= 11.1.0 and < 11.1.4
Paloaltonetworks Pan-os >= 11.1.5 and < 11.1.6
Paloaltonetworks Pan-os >= 11.1.7 and < 11.1.10
Paloaltonetworks Pan-os >= 11.1.11 and < 11.1.13
Paloaltonetworks Pan-os >= 11.2.0 and < 11.2.4
Paloaltonetworks Pan-os >= 11.2.5 and < 11.2.7
Paloaltonetworks Pan-os >= 11.2.8 and < 11.2.10
Paloaltonetworks Pan-os
Paloaltonetworks Prisma Access

Patched Versions

Paloaltonetworks Pan-os 10.1.14
Paloaltonetworks Pan-os 10.2.7
Paloaltonetworks Pan-os 10.2.10
Paloaltonetworks Pan-os 10.2.13
Paloaltonetworks Pan-os 10.2.16
Paloaltonetworks Pan-os 11.1.4
Paloaltonetworks Pan-os 11.1.6
Paloaltonetworks Pan-os 11.1.10
Paloaltonetworks Pan-os 11.1.13
Paloaltonetworks Pan-os 11.2.4
Paloaltonetworks Pan-os 11.2.7
Paloaltonetworks Pan-os 11.2.10

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