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Vulnerabilities

Vulnerability · CVE-2026-0257

Palo Alto Networks PAN-OS Authentication Bypass Vulnerability

Published May 13, 2026 · catalog updated Jun 17, 2026 · Palo Alto Networks PAN-OS

Patch now

CVE-2026-0257 is in the CISA known-exploited catalog, due Jun 1, 2026. Confirm Palo Alto Networks PAN-OS against the vendor advisory and apply that fix. The CVSS score does not change the priority.

Severity
High7.8
Known exploitation
CISA KEV and VulnCheck KEV
EPSS
96.89%
Remediation
Remediation guidance
Affected products
cpe paloaltonetworks/pan-os · cpe paloaltonetworks/prisma access · cpe siemens/ruggedcom ape1808 firmware · vendor 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.

Are you affected?

Enter the version you run. The result uses only the ranges stored on this record.

The check returns affected, not affected, or incomplete. It does not guess a version that is missing from the record.

  • cpe paloaltonetworks/pan-os10.2.7
  • cpe paloaltonetworks/prisma accessversion unspecified
  • cpe siemens/ruggedcom ape1808 firmwareversion unspecified
  • vendor Palo Alto Networks PAN-OSversion unspecified

How to fix CVE-2026-0257

What to do

Three questions, each answered from this record only. Confirm the vendor advisory before you patch.

Should you patch?

CVE-2026-0257 is in the CISA known-exploited catalog, due Jun 1, 2026. Confirm Palo Alto Networks PAN-OS against the vendor advisory and apply that fix. The CVSS score does not change the priority.

Which versions are affected?

Compare what you have installed with 10.2.7. Apply mitigations per vendor instructions, follow applicable BOD 22-01 guidance for cloud services, or discontinue use of the product if mitigations are unavailable.

What should an analyst verify?

CWE-565. EPSS 96.89%. The CISA KEV listing is the exploitation evidence. No Exploit-DB or Metasploit reference is linked. Use the source links for the original advisory.

Code

The project this record applies to. Exploit listings stay in References.

No public source repository is identified for this product.

Timeline

Detection, updates, and resolution for this record.

  1. May 13, 2026 · Catalog

    Detected

    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.

  2. May 29, 2026 · CISA KEV

    Known exploited

    Apply mitigations per vendor instructions, follow applicable BOD 22-01 guidance for cloud services, or discontinue use of the product if mitigations are unavailable.

  3. Jun 1, 2026 · CISA KEV

    Remediation due

    Apply mitigations per vendor instructions, follow applicable BOD 22-01 guidance for cloud services, or discontinue use of the product if mitigations are unavailable.

  4. Jun 17, 2026 · Catalog

    Updated

    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.

  5. Jun 17, 2026 · NIST NVD

    Updated

    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.

Sources

  • CISA KEVConfirmed exploitationCVE-2026-0257

    Palo Alto Networks PAN-OS contains an authentication bypass vulnerability that allows attackers to bypass security restrictions and establish an unauthorized VPN connection.

    cisa.gov
  • CVE.orgVulnerability recordCVE-2026-0257

    Official CVE identifier

    cve.org
  • FIRST EPSSExploitation probabilityCVE-2026-0257

    30-day exploitation probability 96.9%

    first.org
  • NIST NVDVulnerability recordCVE-2026-0257

    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.

    nvd.nist.gov
  • VulnCheck KEVConfirmed exploitationCVE-2026-0257

    Palo Alto Networks PAN-OS contains an authentication bypass vulnerability that allows attackers to bypass security restrictions and establish an unauthorized VPN connection.

    vulncheck.com

References

Freshness

Last verified in this catalog Oct 18, 2026. Significant claims (KEV, EPSS, CVSS, affected ranges) come from the source rows above — open the original publisher for the authoritative advisory.