CVE-2026-0257 HIGH

CVE-2026-0257: PAN-OS: GlobalProtect Authentication Bypass Vulnerabilities

Vendor Palo Alto Networks
Product PAN-OS
Weakness CWE-565 · Reliance on cookies
KEV Status Known Exploited
Published May 13, 2026
Last update June 9, 2026
View on NVD All CVEs

CVSS base score

7.8/10
Attack vector Network
Attack complexity Low
Privileges required None
User interaction None
Confidentiality —
Integrity —

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:A/AU:N/R:A/V:D/RE:M/U:Red

What the vulnerability does

01Description

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.

CISA mandated remediation

02CISA Required Action

Apply mitigations per vendor instructions, follow applicable BOD 22-01 guidance for cloud services, or discontinue use of the product if mitigations are unavailable.

Key dates

03Disclosure timeline

May 13, 2026 CVE published
June 9, 2026 Record updated