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Unrated severityNVD Advisory· Published Jan 15, 2026· Updated Jan 30, 2026

PAN-OS: Firewall Denial of Service (DoS) in GlobalProtect Gateway and Portal

CVE-2026-0227

Description

A vulnerability in Palo Alto Networks PAN-OS software enables an unauthenticated attacker to cause a denial of service (DoS) to the firewall. Repeated attempts to trigger this issue results in the firewall entering into maintenance mode.

Affected products

4
  • Paloaltonetworks/Pan Osv52 versions
    cpe:2.3:o:palo_alto_networks:pan-os:12.1.3:h1:*:*:*:*:*:*+ 1 more
    • cpe:2.3:o:palo_alto_networks:pan-os:12.1.3:h1:*:*:*:*:*:*range: 12.1.2
    • (no CPE)
  • Palo Alto Networks/Cloud NGFWv5
    Range: All
  • Palo Alto Networks/Prisma Accessv5
    Range: 11.2

Patches

0

No patches discovered yet.

Vulnerability mechanics

AI mechanics synthesis has not run for this CVE yet.

References

1

News mentions

0

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