Palo Alto Networks PAN-OS Authentication Bypass Vulnerability

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• NewsExploited · CISA KEVKnown ransomware usePalo Alto Networks · PAN-OS

  Palo Alto Networks PAN-OS Authentication Bypass Vulnerability

  CVE-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's required action · due 1 Jun 2026 for U.S. federal civilian agencies

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

  Cited by CISA: security.paloaltonetworks.com · nvd.nist.gov

  Added to KEV 29 May 2026 · Source checked 4 Nov 2026, 16:35 UTC · CISA KEV entry

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