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CVE-2026-0283— PAN-OS: Authentication Bypass Vulnerability in Large Scale VPN (LSVPN)

Quick assessment

Affected
Palo Alto Networks Cloud NGFW
Exploitation
No confirmed in-the-wild exploitation; assess based on exposure
Recommended action
Check the vendor advisory and references for a fixed version. If immediate upgrade is impossible, restrict exposure and increase monitoring.

Palo Alto Networks Cloud NGFW是美国Palo Alto Networks公司的防火墙。 Palo Alto Networks Cloud NGFW存在授权问题漏洞，该漏洞源于Large Scale VPN功能存在身份验证绕过问题，可能导致具有网络访问权限的攻击者绕过安全限制并建立未经授权的站点到站点VPN连接。

CVSS 4.5 · Medium EPSS 0.38% · P31

Possible ATT&CK Techniques 1 AI

T1190 · Exploit Public-Facing Application

Affected Version Matrix 6

VendorProduct Version RangeStatus
Palo Alto Networks Cloud NGFW All unaffected
Palo Alto Networks PAN-OS 12.1.0< 12.1.8 affected
11.2.0< 11.2.13 affected
11.1.0< 11.1.16 affected
10.2.0< 10.2.18-h8 affected
Palo Alto Networks Prisma Access All unaffected
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I. Basic Information for CVE-2026-0283

Vulnerability Information
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Vulnerability Title
PAN-OS: Authentication Bypass Vulnerability in Large Scale VPN (LSVPN)
Source: CVE Program / CVE List V5
Vulnerability Description
An authentication bypass vulnerability in Large Scale VPN ( LSVPN) functionality of Palo Alto Networks PAN-OS software allows an attacker with network access to bypass security restrictions and establish an unauthorized site-to-site VPN connection. Panorama, Cloud NGFW, and Prisma® Access are not impacted by this vulnerability.
Source: CVE Program / CVE List V5
CVSS Information
CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:L/VI:L/VA:L/SC:H/SI:L/SA:N/E:U/AU:N/R:U/V:D/RE:M/U:Amber
Source: CVE Program / CVE List V5
Vulnerability Type
关键功能的认证机制缺失
Source: CVE Program / CVE List V5
Vulnerability Title
Palo Alto Networks Cloud NGFW 授权问题漏洞
Source: CNNVD (China National Vulnerability Database)
Vulnerability Description
Palo Alto Networks Cloud NGFW是美国Palo Alto Networks公司的防火墙。 Palo Alto Networks Cloud NGFW存在授权问题漏洞，该漏洞源于Large Scale VPN功能存在身份验证绕过问题，可能导致具有网络访问权限的攻击者绕过安全限制并建立未经授权的站点到站点VPN连接。
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 12.1.0 ~ 12.1.8 cpe:2.3:o:palo_alto_networks:pan-os:12.1.7:h1:*:*:*:*:*:*
Palo Alto Networks Prisma Access - -

II. Public POCs for CVE-2026-0283

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III. Intelligence Information for CVE-2026-0283

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Vendor Advisories for CVE-2026-0283 (1)

Same Patch Batch · Palo Alto Networks · 2026-07-09 · 13 CVEs total

CVE-2026-0286 6.0 MEDIUM PAN-OS: Authenticated Command Injection in CLI
CVE-2026-0284 4.7 MEDIUM PAN-OS: XML Injection Vulnerability in Large Scale VPN (LSVPN)
CVE-2026-0287 4.6 MEDIUM PAN-OS: Denial of Service Vulnerabilities in Network Traffic Processing
CVE-2026-0285 4.4 MEDIUM PAN-OS: Server-Side Request Forgery Vulnerability in Management Web Interface
CVE-2026-0280 1.7 LOW PAN-OS: IPv6 Firewall Policy Bypass
CVE-2026-0281 1.7 LOW PAN-OS: Information Disclosure Vulnerability in Management Web Interface
CVE-2026-0282 1.2 LOW PAN-OS: File Deletion Vulnerability in Management Web Interface
CVE-2026-0279 0.4 LOW PAN-OS: Multiple Cross-Site Scripting (XSS) Vulnerabilities
CVE-2026-0275 Prisma Browser: Local Privilege Escalation on macOS
CVE-2026-0276 Cortex XDR Broker VM: Privilege Escalation (PE) Vulnerability
CVE-2026-0277 Prisma Access Agent: Improper Certificate Validation on iOS
CVE-2026-0278 Prisma Access Agent: Multiple DLP Policy Bypass Vulnerabilities on Windows

IV. Related Vulnerabilities

Same product: Cloud NGFW
Same vendor: Palo Alto Networks
Same weakness: CWE-306