CVE-2026-0283

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

State: Published
Severity: 4.5 Medium
Published: Jul 9, 2026
Updated: Oct 15, 2026
Reserved: Nov 3, 2025

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.

Scores

CVSS	Score	Vector	Source
4.0	4.5 Medium	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	palo_alto

Weaknesses

CWE-306 Missing Authentication for Critical Function

Affected Products

Product	Versions
Cloud NGFWPalo Alto Networks	AllNot affected
PAN-OSPalo Alto Networks	12.1.0 to before 12.1.8Affectedfrom 12.1.8Not affectedfrom 12.1.7-h2Not affectedfrom 12.1.4-h8Not affected 11.2.0 to before 11.2.13Affectedfrom 11.2.13Not affectedfrom 11.2.10-h12Not affectedfrom 11.2.7-h18Not affectedfrom 11.2.4-h20Not affected 11.1.0 to before 11.1.16Affectedfrom 11.1.16Not affectedfrom 11.1.13-h9Not affectedfrom 11.1.10-h30Not affectedfrom 11.1.7-h8Not affectedfrom 11.1.6-h35Not affectedfrom 11.1.4-h35Not affected 10.2.0 to before 10.2.18-h8Affectedfrom 10.2.18-h8Not affectedfrom 10.2.16-h9Not affectedfrom 10.2.13-h23Not affectedfrom 10.2.10-h39Not affectedfrom 10.2.7-h36Not affected
Prisma AccessPalo Alto Networks	AllNot affected

References

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