# CVE-2026-0257

## Summary

- **CVE ID:** CVE-2026-0257
- **Severity:** HIGH
- **CVSS Score:** 7.8 (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)
- **CWE:** CWE-565
- **Published:** May 13, 2026
- **Last Modified:** Jul 14, 2026

## Description

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.

## Affected Products

- Palo Alto Networks — Cloud NGFW (All)
- Palo Alto Networks — PAN-OS (12.1.0)
- Palo Alto Networks — PAN-OS (11.2.0)
- Palo Alto Networks — PAN-OS (11.1.0)
- Palo Alto Networks — PAN-OS (10.2.0)
- Palo Alto Networks — Prisma Access (10.2.0)
- Palo Alto Networks — Prisma Access (11.2.0)

## References

- [CNA](https://security.paloaltonetworks.com/CVE-2026-0257)
- [CISA-ADP](https://www.cisa.gov/known-exploited-vulnerabilities-catalog?field_cve=CVE-2026-0257)
- [siemens-SADP](https://cert-portal.siemens.com/productcert/html/ssa-967325.html)

## Exploitation Prediction (EPSS)

- **EPSS Score:** 93.91%
- **EPSS Percentile:** 99.8

## Known Exploited Vulnerabilities (KEV)

- **Date Added:** May 29, 2026
- **Due Date:** Jun 1, 2026

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_Exported from OnDuty AI Vulnerability Intelligence on 2026-09-11._