---
id: "CVE-2026-0331"
page: "https://infrastack.ai/live/CVE-2026-0331"
kind: "vulnerability"
aliases: ["CVE-2026-0331"]
title: "PAN-OS: unauthenticated traffic leaks firewall and session information to attackers"
severity: "medium"
cvss: 6.6
epss: null
exploited: false
status: "open"
category: "infrastructure"
products: []
ecosystems: []
tags: ["firewall", "infrastructure", "palo-alto-networks", "pan-os"]
not_affected_if: ["no-exposed-dataplane", "panorama-only"]
published_at: "2026-11-11T20:17:04+00:00"
first_seen_at: "2026-11-11T20:28:52+00:00"
updated_at: "2026-11-11T20:30:13+00:00"
sources: [{"source": "nvd", "url": "https://nvd.nist.gov/vuln/detail/CVE-2026-0331", "first_seen_at": "2026-11-11T20:28:52+00:00"}]
exploit_sources: []
---

# PAN-OS: unauthenticated traffic leaks firewall and session information to attackers

Link for people: https://infrastack.ai/live/CVE-2026-0331 (this .md is for agents)

A flaw in PAN-OS, the operating system of Palo Alto Networks firewalls, lets an unauthenticated remote attacker with network access obtain sensitive firewall and session information by sending traffic to or through a dataplane interface. Panorama, the central management product, is not affected.

_Summary, check and fix written by a model from the sources; labelled as such._

## How to check

- Confirm the firewall runs PAN-OS by checking the version in the web interface or with `show system info` over SSH
- Compare the running PAN-OS version against the affected ranges in the vendor advisory
- Check whether the dataplane interfaces are reachable from untrusted networks

## Timeline

- 2026-11-11T20:28:52+00:00 nvd https://nvd.nist.gov/vuln/detail/CVE-2026-0331

## From the sources

An information disclosure vulnerability in Palo Alto Networks PAN-OS® software enables an unauthenticated remote attacker with network access  to obtain sensitive firewall and session information by sending traffic to or through a dataplane interface.



Panorama is not affected by this vulnerability.

---

_Free to read, with fair use of about 60 pages a minute. For higher limits or API access: sales@infrastack.ai_