CVE-2026-0257 KEV
9.1
CRITICAL · CVSS 3.1 · EPSS 96.4% (pctl 100)
Patch first
On CISA KEV — known exploited in the wild, due 2026-06-01.
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.
Scoring
| CVSS | 9.1 (CRITICAL, v3.1) |
|---|---|
| Vector | CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:N |
| EPSS | 96.38% — more likely to be exploited than 100% of all CVEs |
| Weakness | CWE-565 |
| On CISA KEV | yes — remediate by 2026-06-01 |
| Public exploit | none known |
| Published | 2026-05-13 |
| Last modified | 2026-06-17 |
CISA KEV
| Name | Palo Alto Networks PAN-OS Authentication Bypass Vulnerability |
|---|---|
| Added | 2026-05-29 |
| Due | 2026-06-01 |
| Vendor / product | Palo Alto Networks / PAN-OS |
| Ransomware use | known |
Affected (4)
| Vendor | Product |
|---|---|
| paloaltonetworks | pan-os |
| paloaltonetworks | prisma access |
| siemens | ruggedcom ape1808 |
| siemens | ruggedcom ape1808 firmware |
References
→ the Explorer · watch your stack · NVD