CVE-2026-0257 — Palo Alto Networks PAN-OS Authentication Bypass Vulnerability
2026-05-29 • CISA Known Exploited Vulnerability
[event] Palo Alto Networks PAN-OS contains an authentication bypass vulnerability that allows attackers to bypass security restrictions and establish an unauthorized VPN connection.
> AFFECTED SOFTWARE
| Field | Value |
|---|---|
| Vendor | Palo Alto Networks |
| Product | PAN-OS |
| CWE | CWE-565 |
| CVE ID | CVE-2026-0257 |
| Date Added | 2026-05-29 |
| Due Date | 2026-06-01 |
| Ransomware Campaign | Unknown |
> MITIGATION
Apply mitigations per vendor instructions, follow applicable BOD 22-01 guidance for cloud services, or discontinue use of the product if mitigations are unavailable.
Due Date: 2026-06-01