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Critical CVEs

CVE-2026-0257 — Palo Alto Networks PAN-OS Authentication Bypass Vulnerability

May 29, 2026

Palo Alto Networks PAN-OS Authentication Bypass Vulnerability

Affected vendor/product: Palo Alto Networks PAN-OS

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

CISA KEV date added: 2026-05-29

Due date: 2026-06-01

Known ransomware campaign use: Unknown

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