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Palo Alto Networks Security AdvisoriesCVE-2026-0283

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

HighVendor CVSS 7.8 / 10 1 CVE Published Jul 8, 2026 at 4:00 PM UTC

Summary

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.

Products covered

  • Cloud NGFW

  • PAN-OS

  • Prisma Access

  • PAN-OS 12.1

  • PAN-OS 11.2

  • PAN-OS 11.1

  • PAN-OS 10.2

Remediation

Version

Minor Version

Suggested Solution

Cloud NGFW All

No action needed.

PAN-OS 12.1

12.1.5 through 12.1.7-h*

Upgrade to 12.1.7-h2 or 12.1.8 or later.

12.1.2 through 12.1.4-h*

Upgrade to 12.1.4-h8 or 12.1.8 or later.

PAN-OS 11.2

11.2.11 through 11.2.12

Upgrade to 11.2.13 or later.

11.2.8 through 11.2.10-h*

Upgrade to 11.2.10-h12 or 11.2.13 or later.

11.2.5 through 11.2.7-h*

Upgrade to 11.2.7-h18 or 11.2.13 or later.

11.2.0 through 11.2.4-h*

Upgrade to 11.2.4-h20 or 11.2.13 or later.

PAN-OS 11.1

11.1.14 through 11.1.15

Upgrade to 11.1.16 or later.

11.1.11 through 11.1.13-h*

Upgrade to 11.1.13-h9 or 11.1.16 or later.

11.1.8 through 11.1.10-h*

Upgrade to 11.1.10-h30 or 11.1.16 or later.

11.1.7 through 11.1.7-h*

Upgrade to 11.1.7-h8 or 11.1.16 or later.

11.1.5 through 11.1.6-h*

Upgrade to 11.1.6-h35 or 11.1.16 or later.

11.1.0 through 11.1.4-h*

Upgrade to 11.1.4-h35 or 11.1.16 or later.

PAN-OS 10.2

10.2.17 through 10.2.18-h*

Upgrade to 10.2.18-h8 or later.

10.2.14 through 10.2.16-h*

Upgrade to 10.2.16-h9 or later.

10.2.11 through 10.2.13-h*

Upgrade to 10.2.13-h23 or later.

10.2.8 through 10.2.10-h*

Upgrade to 10.2.10-h39 or later.

10.2.0 through 10.2.7-h*

Upgrade to 10.2.7-h36 or later.

All older

unsupported

PAN-OS versions

Upgrade to a supported fixed version.

Prisma Access All

No action needed.

Vendor-listed fixes

  • Cloud NGFW All

  • PAN-OS 12.1 >= 12.1.4-h8, >= 12.1.7-h2, >= 12.1.8

  • PAN-OS 11.2 >= 11.2.4-h20, >= 11.2.7-h18, >= 11.2.10-h12, >= 11.2.13

  • PAN-OS 11.1 >= 11.1.4-h35, >= 11.1.6-h35, >= 11.1.7-h8, >= 11.1.10-h30, >= 11.1.13-h9, >= 11.1.16

  • PAN-OS 10.2 >= 10.2.7-h36, >= 10.2.10-h39, >= 10.2.13-h23, >= 10.2.16-h9, >= 10.2.18-h8

  • Prisma Access All

CVEs in this advisory 1

Updates

  1. Published by Palo Alto Networks

    The publication date reported by the vendor.

  2. Added to SecurityAlert

    We collected the advisory from the official source.

  3. Confirmed at the source

    Our collector saw this advisory during a later source check.