---
id: 7683
title: "CVE-2026-0300 Palo Alto Networks PAN-OS Buffer Overflow Overview & Takeaways"
cve: CVE-2026-0300
source_domain: netspi.com
source_url: "https://www.netspi.com/blog/executive-blog/critical-vulnerability/cve-2026-0300-palo-alto-networks-pan-os-buffer-overflow-overview-takeaways/"
published_at: "2026-05-06T00:00:00Z"
tags: ["rce", "zero-day", "firewall", "pan-os", "palo-alto", "cve-2026-0300", "in-the-wild"]
phying_url: "https://phying.com/item/7683"
lang: en
---

# CVE-2026-0300 Palo Alto Networks PAN-OS Buffer Overflow Overview & Takeaways

## Summary

CVE-2026-0300 is a pre-auth buffer overflow in the PAN-OS User-ID Authentication Portal giving unauthenticated root RCE on PA-Series and VM-Series firewalls, already exploited in the wild.

## Intelligence Metadata

- **Sources:** netspi.com
- **CVE:** CVE-2026-0300
- **Published:** 2026-05-06T00:00:00Z
- **Original:** https://www.netspi.com/blog/executive-blog/critical-vulnerability/cve-2026-0300-palo-alto-networks-pan-os-buffer-overflow-overview-takeaways/
- **Phying News:** https://phying.com/item/7683