Home/CVE/A vulnerability in Palo Alto Networks PAN-OS software enables an unauthenticated attacker to cause a denial of service (
CVE

CVE-2026-0227

A vulnerability in Palo Alto Networks PAN-OS software enables an unauthenticated attacker to cause a denial of service (

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.

HIGH · CVSS 7.5 EPSS 0.00067
Schedule remediation
  • SSVC automatable: yes - attacks can be scripted at scale
  • CVSS base score ≥ 7.0
Sigma rules0 YARA rules0
⬡

Weakness Classification

CWE-754Improper Check for Unusual or Exceptional Conditions
▤

Affected Products & Versions

13
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
▣

Scoring & Timeline

7.5
HIGH · CVSS v3.1 · psirt@paloaltonetworks.com
View on NVD
Attack Vector
Network Adjacent Local Physical
Attack Complexity
Low High
Privileges Required
None Low High
User Interaction
None Required
Scope
Unchanged Changed
Confidentiality
None Low High
Integrity
None Low High
Availability
None Low High
Published to NVD15 Jan 2026 · 07:16 PM
CVSS VectorCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
SSVC triage · cisa-vulnrichment
Exploitation
none
Automatable
yes
Technical impact
partial
SSVC asks the questions that actually drive patch urgency: is it being exploited, can attacks be automated, and how total is the impact.
⚑

Vendor Advisories

2
siemens-csafSSA-513708
cisa-csafcisa-csaf-csaf_files-OT-white-2025-icsa-25-162-02
🔗

References & Sources

1
Source URLs (vendor pages, mailing lists, write-ups). Exploit/PoC links are in their own section above to avoid duplication.
https://security.paloaltonetworks.com/CVE-2026-0227Vendor Advisory
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