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Vulnerability record · CVE-2026-0227 · published 15 January 2026

CVE-2026-0227: Paloaltonetworks pan-os vulnerability

Paloaltonetworks · Pan Os

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.

6.6 CVSS 4.0 Medium EPSS 0.74% · top 46.4% CWE-754 · CWE-754
6.6CVSS 4.0 base score
0.74%EPSS exploitation probability, 30 days
NoNot in CISA KEV
2Affected product versions listed by NVD
1References
17 Jun 2026Last modified by NVD

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.

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/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:Y/R:

Affected products

2 vulnerable configurations from NVD's CPE data, grouped by vendor and product.

References

LinkTags
https://security.paloaltonetworks.com/CVE-2026-0227 Vendor Advisory

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Related vulnerabilities

Same products first, then exploited flaws of the same weakness class.

10.0CVE-2024-3400PAN-OS GlobalProtect command injection allows unauthenticated root code executionA command injection caused by arbitrary file creation in the GlobalProtect feature of Palo Alto Networks PAN-OS lets an unauthenticated attacker run …KEVEPSS 100%analysed10.0CVE-2020-2021PAN-OS SAML signature verification bypass allows authentication bypassPAN-OS fails to properly verify SAML signatures when SAML authentication is enabled and the 'Validate Identity Provider Certificate' option is unchec…KEVEPSS 4.4%analysed9.8CVE-2017-15944PAN-OS management interface input validation flaw allows remote code executionPAN-OS versions before 6.1.19, 7.0.x before 7.0.19, 7.1.x before 7.1.14, and 8.0.x before 8.0.6 contain an input validation and memory buffer overflo…KEVEPSS 98%analysed9.3CVE-2026-0300PAN-OS User-ID Authentication Portal buffer overflow allows root code executionA buffer overflow (out-of-bounds write, CWE-787) in the User-ID Authentication Portal (Captive Portal) service of Palo Alto Networks PAN-OS lets an u…KEVEPSS 32%analysed9.3CVE-2024-0012PAN-OS Management Web Interface Authentication BypassPAN-OS contains a missing authentication flaw (CWE-306) in the management web interface that lets an unauthenticated network attacker obtain PAN-OS a…KEVEPSS 100%analysed8.8CVE-2025-0108PAN-OS management web interface authentication bypassPAN-OS contains a missing-authentication flaw (CWE-306) in the management web interface that lets an unauthenticated attacker with network access inv…KEVEPSS 98%analysed8.7CVE-2024-3393PAN-OS DNS Security packet causes firewall reboot and maintenance modeA denial of service flaw in the DNS Security feature of Palo Alto Networks PAN-OS lets an unauthenticated attacker send a crafted packet through the …KEVEPSS 29%analysed8.6CVE-2026-0322Paloaltonetworks pan-os code injection vulnerabilityA remote code execution (RCE) vulnerability in the management interface of Palo Alto Networks PAN-OS® software enables an authenticated attacker with…KEVEPSS 1.1%

Source: NIST National Vulnerability Database (record CVE-2026-0227), CISA KEV, FIRST EPSS (scores of 2026-10-15). This page is refreshed as NVD updates the record.