# Palo Alto CVE-2026-0300 Zero-Day Gave Attackers Root-Level PAN-OS Access

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## Article Metadata
- Title: Palo Alto CVE-2026-0300 Zero-Day Gave Attackers Root-Level PAN-OS Access
- Summary: CVE-2026-0300 is a critical PAN-OS User-ID Authentication Portal zero-day exploited before disclosure, giving likely state-backed attackers root-level firewall access.
- Published: May 18, 2026, 10:06 AM EDT
- Updated: May 18, 2026, 10:06 AM EDT
- Category: Exploits
- Primary topic: Zero-Day
- Authors: Theo Martin
- Read time: 9 min
- Language: en_US
- Publication time zone: America/New_York (U.S. Eastern Time)
- Access: Free to read

## Topic Links
- [Exploits](https://threatfrontier.com/categories/exploits): Category archive for related coverage.
- [Zero-Day](https://threatfrontier.com/tags/zero-day): 2 public articles in this topic.

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