CVE-2026-0257 PUBLISHED

PAN-OS: GlobalProtect Authentication Bypass Vulnerabilities

Assigner: palo_alto
Reserved: 03.11.2025 Published: 13.05.2026 Updated: 13.05.2026

Authentication bypass vulnerabilities in the GlobalProtect portal and gateway of Palo Alto Networks PAN-OS® software allows the attacker to bypass security restrictions and establish an unauthorized VPN connection.

Panorama and Cloud NGFW are not impacted by these issues.

Metrics

CVSS 4.0

CVSS Vector: CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:L/VI:N/VA:N/SC:H/SI:H/SA:N/E:U/AU:N/R:A/V:D/RE:M/U:Amber
CVSS Score: 4.7

Exploitability Metrics		Vulnerable System Impact Metrics		Subsequent System Impact Metrics
Attack Vector	Network	Confidentiality	Low	Confidentiality	High
Attack Complexity	Low	Integrity	None	Integrity	High
Attack Requirements	None	Availability	None	Availability	None
Privileges Required	None
User Interaction	None

CVSS 4.0

Product Status

Vendor	Palo Alto Networks
Product	Cloud NGFW
Versions	Default: unaffected Version All is unaffected

Vendor	Palo Alto Networks
Product	PAN-OS
Versions	Default: unaffected affected from 12.1.0 to 12.1.7, 12.1.4-h6 (excl.) affected from 11.2.0 to 11.2.12, 11.2.10-h7, 11.2.7-h14, 11.2.4-h17 (excl.) affected from 11.1.0 to 11.1.15, 11.1.13-h5, 11.1.10-h25, 11.1.7-h6, 11.1.6-h32, 11.1.4-h33 (excl.) affected from 10.2.0 to 10.2.18-h6, 10.2.16-h7, 10.2.13-h21, 10.2.10-h36, 10.2.7-h34 (excl.)

Vendor	Palo Alto Networks
Product	Prisma Access
Versions	Default: unaffected affected from 10.2.0 to 10.2.10-h36 (excl.) affected from 11.2.0 to 11.2.7-h13 (excl.)

Exploits

Palo Alto Networks is not aware of any malicious exploitation of these issues.

Credits

Palo Alto Networks thanks our internal security research teams for discovering and reporting this issue. other

References

https://security.paloaltonetworks.com/CVE-2026-0257

Problem Types

CWE-565 Reliance on Cookies without Validation and Integrity Checking CWE

Impacts

CAPEC-114 Authentication Abuse