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

Medium 4.6 Published 10 Jun 2026 Updated 15 Oct 2026

An authenticated user can cause a denial of service by triggering system reboots via malicious packets in PAN-OS tunnel traffic processing.

Exploited in the wild: Not known
Login needed: Any signed-in user
Attackable: Local or same network only
Victim action needed: Not needed
Fix: None listed

What is CVE-2026-0269?

CVE-2026-0269 is a medium-severity memory corruption vulnerability in Paloaltonetworks Pan-Os, published on 10 Jun 2026. It can only be exploited from the same machine or local network, with no action from the victim.

Official 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.

Weakness: CWE-754

Which versions are affected by CVE-2026-0269?

It affects 1 product.

Products include Paloaltonetworks Pan-Os.

How do I fix CVE-2026-0269?

No fix has been published for CVE-2026-0269 yet. Limit exposure of the affected software until one is available.

Upgrade to the fixed version. Memory-safe languages, compiler hardening and fuzzing prevent most new cases. More about Memory corruption.

Is CVE-2026-0269 being exploited?

There is no known exploitation of CVE-2026-0269 in the wild and no public exploit code.

All Paloaltonetworks Pan-Os vulnerabilities

Sources

Also known as GHSA-v62p-f565-pfxr.