CVE-2021-3054: Palo Alto Networks PAN-OS

Medium severity, CVSS 6.6. EPSS: 0.9% chance of exploitation in the next 30 days.

A time-of-check to time-of-use (TOCTOU) race condition vulnerability in the Palo Alto Networks PAN-OS web interface enables an authenticated administrator with permission to upload plugins to execute arbitrary code with root user privileges. This issue impacts: PAN-OS 8.1 versions earlier than PAN-OS 8.1.20; PAN-OS 9.0 versions earlier than PAN-OS 9.0.14; PAN-OS 9.1 versions earlier than PAN-OS 9.1.11; PAN-OS 10.0 versions earlier than PAN-OS 10.0.7; PAN-OS 10.1 versions earlier than PAN-OS 10.1.2. 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 9.1.11 (fixed in 9.1.11); from 10.0.0, before 10.0.7 (fixed in 10.0.7); from 10.1.0, before 10.1.2 (fixed in 10.1.2)

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