Summary
| Parameter | Value |
|---|---|
| CVE ID | CVE-2026-0257 |
| Alert Source | CISA KEV - Active Exploitation |
| CVE Publication Year | 2026 |
| Date Published | 2026-05-29 |
| Vendor | Palo Alto Networks |
| Product | PAN-OS |
| CVSS Score | 9.1 (critical) |
| EPSS Score | 36.3% (percentile: 97%) |
| CISA KEV | Yes - confirmed active exploitation |
| Ransomware | Not confirmed |
| Remediation Deadline | 2026-06-01 |
Vulnerability 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 Actions
Apply mitigations per vendor instructions, follow applicable BOD 22-01 guidance for cloud services, or discontinue use of the product if mitigations are unavailable.
Who Is Affected?
This vulnerability affects PAN-OS by Palo Alto Networks. Check if your organization uses this software and requires updates.
Sources
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