CVE-2020-2011: Palo Alto Networks PAN-OS

High severity, CVSS 7.5. EPSS: 1.9% chance of exploitation in the next 30 days.

An improper input validation vulnerability in the configuration daemon of Palo Alto Networks PAN-OS Panorama allows for a remote unauthenticated user to send a specifically crafted registration request to the device that causes the configuration service to crash. Repeated attempts to send this request result in denial of service to all PAN-OS Panorama services by restarting the device and putting it into maintenance mode. This issue affects: All versions of PAN-OS 7.1, PAN-OS 8.0; PAN-OS 8.1 versions earlier than 8.1.14; PAN-OS 9.0 versions earlier than 9.0.7; PAN-OS 9.1 versions earlier than 9.1.0.

Affected products

• Palo Alto Networks PAN-OS: from 7.1.0, up to and including 7.1.26; from 8.0.0, up to and including 8.0.20; from 8.1.0, before 8.1.14 (fixed in 8.1.14); from 9.0.0, before 9.1.0 (fixed in 9.1.0)

Published 2020-05-13. Last modified 2026-06-17.