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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.

PUBLISHED Reserved 2025-11-03 | Published 2026-01-15 | Updated 2026-01-30 | Assigner palo_alto




MEDIUM: 6.6CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N/E:U/AU:Y/R:U/V:D/RE:M/U:Amber

Problem types

CWE-754 Improper Check for Unusual or Exceptional Conditions

Product status

Default status
unaffected

All (custom)
unaffected

Default status
affected

12.1.2 (custom) before 12.1.4, 12.1.3-h3
affected

11.2.0 (custom) before 11.2.10-h2, 11.2.7-h8, 11.2.4-h15
affected

11.1.0 (custom) before 11.1.13, 11.1.10-h9, 11.1.6-h23, 11.1.4-h27
affected

10.2.0 (custom) before 10.2.18-h1, 10.2.16-h6, 10.2.13-h18, 10.2.10-h30, 10.2.7-h32
affected

10.1.0 (custom) before 10.1.14-h20
affected

Default status
unaffected

11.2 (custom) before 11.2.7-h8
affected

10.2 (custom) before 10.2.10-h29, 10.2.4-h43
affected

Timeline

2026-01-16:Added 10.2.4-h43 to Prisma Access Fix Versions.
2026-01-14:Changed recommended fix version from 11.2.4-h14 to 11.2.4-h15.
2026-01-14:Initial Publication
2026-01-30:Fixed a broken link and updated the Solutions table.

Credits

an external reporter finder

References

security.paloaltonetworks.com/CVE-2026-0227 vendor-advisory

cve.org (CVE-2026-0227)

nvd.nist.gov (CVE-2026-0227)

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