CVE-2026-0283 is an authentication bypass vulnerability in the Large Scale VPN (LSVPN) functionality of Palo Alto Networks PAN-OS software. This flaw allows an attacker with network access to bypass security restrictions and establish an unauthorized site-to-site VPN connection. The vulnerability does not affect Panorama, Cloud NGFW, or Prisma Access. It has a CVSS 3.1 score of 7.2, indicating a medium severity level.