CVE-2026-0227— PAN-OS: Firewall Denial of Service (DoS) in GlobalProtect Gateway and Portal
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I. Basic Information for CVE-2026-0227
Vulnerability Information
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Vulnerability Title
PAN-OS: Firewall Denial of Service (DoS) in GlobalProtect Gateway and Portal
Source: NVD (National Vulnerability Database)
Vulnerability 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.
Source: NVD (National Vulnerability Database)
CVSS Information
N/A
Source: NVD (National Vulnerability Database)
Vulnerability Type
对因果或异常条件的不恰当检查
Source: NVD (National Vulnerability Database)
Vulnerability Title
Palo Alto Networks PAN-OS 安全漏洞
Source: CNNVD (China National Vulnerability Database)
Vulnerability Description
Palo Alto Networks PAN-OS是美国Palo Alto Networks公司的一套为其防火墙设备开发的操作系统。 Palo Alto Networks PAN-OS存在安全漏洞，该漏洞源于未经验证的攻击者可导致防火墙拒绝服务。
Source: CNNVD (China National Vulnerability Database)
CVSS Information
N/A
Source: CNNVD (China National Vulnerability Database)
Vulnerability Type
N/A
Source: CNNVD (China National Vulnerability Database)
Affected Products
| Vendor | Product | Affected Versions | CPE | Subscribe |
|---|---|---|---|---|
| Palo Alto Networks | Cloud NGFW | - | - | |
| Palo Alto Networks | PAN-OS | 12.1.2 ~ 12.1.4, 12.1.3-h3 | cpe:2.3:o:palo_alto_networks:pan-os:12.1.3:h1:*:*:*:*:*:* | |
| Palo Alto Networks | Prisma Access | 11.2 ~ 11.2.7-h8 | - |
II. Public POCs for CVE-2026-0227
| # | POC Description | Source Link | Shenlong Link |
|---|---|---|---|
| 1 | CVE-2026-0227 Advanced Scanner | https://github.com/CkAbhijit/CVE-2026-0227-Advanced-Scanner | POC Details |
| 2 | A lightweight, non-destructive Python script to scan for exposed Palo Alto Networks GlobalProtect portals/gateways and fingerprint potential PAN-OS versions. Designed primarily to help identify systems potentially vulnerable to CVE-2026-0227 (unauthenticated DoS in GlobalProtect, disclosed January 2026). | https://github.com/TeeyaR/CVE-2026-0227-Palo-Alto | POC Details |
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IV. Related Vulnerabilities
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V. Comments for CVE-2026-0227
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