What is CVE-2026-0300?

CVE-2026-0300 is a security advisory published by Palo Alto Networks Security Advisories with Critical severity. CVE-2026-0300 PAN-OS: Unauthenticated user initiated Buffer Overflow Vulnerability in User-ID™ Authentication Portal

Which CVE IDs does CVE-2026-0300 cover?

CVE-2026-0300 covers the following CVE IDs: CVE-2026-0300. Each CVE has its own detail page on EchelonGraph Pulse with the synthesized EG score.

Which products are affected by CVE-2026-0300?

CVE-2026-0300 affects 1 product, including: PAN-OS.

CVE-2026-0300Critical

CVE-2026-0300 PAN-OS: Unauthenticated user initiated Buffer Overflow Vulnerability in User-ID™ Authentication Portal

Vendor

Palo Alto Networks Security Advisories

Published

May 16, 2026

Last Modified

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🔗 CVE IDs covered (1)

CVE-2026-0300 →

🎯 Affected products1

PAN-OS

🔗 References (1)

advisoryhttps://security.paloaltonetworks.com/CVE-2026-0300