CVE-2026-0257
PAN-OS: GlobalProtect Authentication Bypass Vulnerabilities
- Published
- May 13, 2026
- Updated
- Jul 14, 2026
- Assigning CNA
- palo_alto
- Evidence observed
- May 29, 2026
Primary CVSS
nvd · CVSS 4.0
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/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:N/R:A/V:D/RE:M/U:RedHigh · next 30 days
- Percentile
- 99.9%
- Model date
- Sep 21, 2026
EPSS is a statistical estimate, not a certainty or a measure of impact. Combine it with CVSS, KEV status, exposure and your environment.
CISA Known Exploited
This CVE appears in the CISA Known Exploited Vulnerabilities catalog.
Summary
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.
Sources
7- CVE-2026-0257Exploit
CVE-2026-0257
- CVE-2026-0257-PoCDetection
Passive, read-only remote detection tool for CVE-2026-0257, an authentication bypass in Palo Alto Networks PAN-OS GlobalProtect. Fingerprints PAN-OS versions and checks for auth-override cookie indicators to identify vulnerable systems.
- CVE-2026-0257Scanner
Automated vulnerability scanner for CVE-2026-0257 (PAN-OS GlobalProtect Authentication Bypass) with TLS certificate enumeration, authentication cookie validation, multi-threaded bulk scanning, and IOC-based detection reporting for security teams.
Responsible use
Use vulnerability information only on systems you own or are authorized to test. Kitploit links to public research metadata and does not store exploit code or malicious payloads.