CVE-2026-0257
critical CISA KEVPalo Alto Networks PAN-OS Authentication Bypass Vulnerability
Vendor / product: Palo Alto Networks — PAN-OS
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.
CVSS
9.1
9.1 (CVSS v3.1)
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:N Severity source: NVD CVSS v3.1 (nvd@nist.gov)
Timeline (UTC)
Published: 2026-05-13 19:17
Modified: 2026-10-26 14:10
NVD status: Analyzed
Last synced 1 day ago
Verified against the source API 2026-10-27 07:07 UTC
Exploitation
Listed in CISA KEV
Added 2026-05-29 · due 2026-06-01
Known ransomware use: Known
Required action (CISA)
Apply mitigations per vendor instructions, follow applicable BOD 22-01 guidance for cloud services, or discontinue use of the product if mitigations are unavailable.
Affected products
paloaltonetworks / pan-os <10.2.7, 10.2.7, 10.2.8, 10.2.9, 10.2.10, 10.2.11
paloaltonetworks / prisma_access all versions
siemens / ruggedcom_ape1808_firmware all versions
Weakness classification (CWE)
Source: NVD / CISA. “NVD-CWE-Other” and “NVD-CWE-noinfo” mean NVD could not assign a specific weakness.
Mitigation & advisories
Vendor advisory: https://security.paloaltonetworks.com/CVE-2026-0257
References
- https://security.paloaltonetworks.com/CVE-2026-0257 psirt@paloaltonetworks.com
- https://cert-portal.siemens.com/productcert/html/ssa-967325.html 0b142b55-0307-4c5a-b3c9-f314f3fb7c5e
- https://www.cisa.gov/known-exploited-vulnerabilities-catalog?field_cve=CVE-2026-0257 134c704f-9b21-4f2e-91b3-4a467353bcc0
Data sources
CISA KEV — fetched 2026-10-27 06:50 UTC · record ↗
NVD CVE API 2.0 — fetched 2026-10-27 07:07 UTC · record ↗