CVE Watch—

CVE-2026-0257

Palo Alto Networks PAN-OS Authentication Bypass Vulnerability

CVSS

—

No CVSS

EPSS

86.7%

p100

KEV

YES

May 29, 2026

Exploit Today

0-100

Published: — · Last modified: —

EPSS · 30d

86.7%EPSS · 30 days86.7%

2026-06-302026-07-16

KEV catalog record

Product

Palo Alto Networks / PAN-OS

Vulnerability

Palo Alto Networks PAN-OS Authentication Bypass Vulnerability

Added to KEV

May 29, 2026

Remediate by

Jun 1, 2026

Known ransomware use

Summary description

Palo Alto Networks PAN-OS contains an authentication bypass vulnerability that allows attackers to bypass security restrictions and establish an unauthorized VPN connection.

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.

Notes

https://security.paloaltonetworks.com/CVE-2026-0257 ; https://nvd.nist.gov/vuln/detail/CVE-2026-0257

Related CVEs

CVECVSSEPSSKEVRExploitTitleMod.

CVE-2024-3400—

100.0%

KEV—80Palo Alto Networks PAN-OS Command Injection Vulnerability—CVE-2024-0012—

100.0%

KEV—80Palo Alto Networks PAN-OS Management Interface Authentication Bypass Vulnerability—CVE-2017-15944—

99.9%

KEV—80Palo Alto Networks PAN-OS Remote Code Execution Vulnerability—CVE-2025-0108—

99.9%

KEV—80Palo Alto Networks PAN-OS Authentication Bypass Vulnerability—CVE-2024-9474—

99.8%

KEV—80Palo Alto Networks PAN-OS Management Interface OS Command Injection Vulnerability—CVE-2019-1579—

98.4%

KEV—80Palo Alto Networks PAN-OS Remote Code Execution Vulnerability—