CVE-2021-3052: Palo Alto Networks PAN-OS

Medium severity, CVSS 5.4. EPSS: 0.6% chance of exploitation in the next 30 days.

A reflected cross-site scripting (XSS) vulnerability in the Palo Alto Network PAN-OS web interface enables an authenticated network-based attacker to mislead another authenticated PAN-OS administrator to click on a specially crafted link that performs arbitrary actions in the PAN-OS web interface as the targeted authenticated administrator. This issue impacts: PAN-OS 8.1 versions earlier than 8.1.20; PAN-OS 9.0 versions earlier than 9.0.14; PAN-OS 9.1 versions earlier than 9.1.10; PAN-OS 10.0 versions earlier than 10.0.2. This issue does not affect Prisma Access.

Affected products

• Palo Alto Networks PAN-OS: from 8.1.0, before 8.1.20 (fixed in 8.1.20); from 9.0.0, before 9.0.14 (fixed in 9.0.14); from 9.1.0, before 9.1.10 (fixed in 9.1.10); from 10.0.0, before 10.0.2 (fixed in 10.0.2)

Published 2021-09-08. Last modified 2026-06-17.