CVE-2020-1993: Palo Alto Networks PAN-OS

Medium severity, CVSS 5.4. EPSS: 0.4% chance of exploitation in the next 30 days.

The GlobalProtect Portal feature in PAN-OS does not set a new session identifier after a successful user login, which allows session fixation attacks, if an attacker is able to control a user's session ID. This issue affects: All PAN-OS 7.1 and 8.0 versions; PAN-OS 8.1 versions earlier than 8.1.14; PAN-OS 9.0 versions earlier than 9.0.8.

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, up to and including 8.1.13; from 9.0.0, up to and including 9.0.7

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