- High 7.8
- Known exploited (CISA KEV)
- Used in ransomware (CISA)
CVE-2026-0257
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.
Scores
The facts
- Published
- 13 May 2026
- Last changed
- 17 June 2026
- NVD status
- Analyzed
- Severity
- High, CVSS 7.8 out of 10 (version 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… - Weakness
- Affects
- paloaltonetworks pan-os
- paloaltonetworks prisma access
- siemens ruggedcom ape1808 firmware
- Known exploited
- Yes. CISA added it to the Known Exploited Vulnerabilities catalogue on 29 May 2026. CISA lists it as used in ransomware campaigns.
- EPSS
- 96.9% chance of exploitation activity in the next 30 days (percentile 100).
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