Riskcovery

CVE-2026-0269

PAN-OS: Denial of Service (DoS) in Tunnel Traffic Processing

State
Published
Severity
4.6 Medium
Published
Jun 10, 2026
Updated
Oct 15, 2026
Reserved
Nov 3, 2025

Read the record on cve.org

Description

A memory corruption vulnerability in the processing of tunnel traffic in Palo Alto Networks PAN-OS® software allows an authenticated user to initiate system reboots using a maliciously crafted packet. Repeated attempts to initiate a reboot causes the firewall to enter maintenance mode.

Panorama, Cloud NGFW, and Prisma® Access are not impacted by this vulnerability.

Scores

CVSSScoreVectorSource
4.04.6 MediumCVSS:4.0/AV:A/AC:L/AT:N/PR:L/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N/E:U/AU:N/R:A/V:D/RE:M/U:Amberpalo_alto

Weaknesses

  • CWE-754 Improper Check for Unusual or Exceptional Conditions

Affected Products

ProductVersions
Cloud NGFWPalo Alto Networks
  • AllNot affected
PAN-OSPalo Alto Networks
  • 12.1.0 to before 12.1.5Affectedfrom 12.1.5Not affectedfrom 12.1.4-h5Not affected
  • 11.2.0 to before 11.2.10Affectedfrom 11.2.10Not affectedfrom 11.2.7-h4Not affectedfrom 11.2.4-h17Not affected
  • 11.1.0 to before 11.1.6-h21Affectedfrom 11.1.12Not affectedfrom 11.1.10-h7Not affectedfrom 11.1.6-h21Not affectedfrom 11.1.4-h33Not affected
  • 10.2.0 to before 10.2.16-h6Affectedfrom 10.2.18Not affectedfrom 10.2.16-h6Not affectedfrom 10.2.13-h21Not affectedfrom 10.2.10-h36Not affectedfrom 10.2.7-h34Not affected
PanoramaPalo Alto Networks
  • AllNot affected
Prisma AccessPalo Alto Networks
  • AllNot affected

References

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