PAN-OS: Denial of Service (DoS) in Tunnel Traffic Processing
CVE-2026-0269

4.6MEDIUM

Key Information:

Vendor

Palo Alto Networks
Status
Cloud Ngfw
Pan-os
Panorama
Prisma Access
Vendor
CVE Published:
10 June 2026

Badges

👾 Exploit Exists

What is CVE-2026-0269?

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.

Affected Version(s)

PAN-OS 12.1.0 < 12.1.5

PAN-OS 11.2.0 < 11.2.10

PAN-OS 11.1.0 < 11.1.6-h21

References

https://security.paloaltonetworks.com/CVE-2026-0269
vendor-advisory

CVSS V4

Score:
4.6
Severity:
MEDIUM
Confidentiality:
None
Integrity:
None
Availability:
High
Attack Vector:
Adjacent Network
Attack Complexity:
Low
Attack Required:
None
Privileges Required:
Undefined
User Interaction:
None

Timeline

  • 👾

    Exploit known to exist

  • Vulnerability published

  • Vulnerability Reserved

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