CVE-2020-1993

Name: CVE-2020-1993
Creator: NVD / NIST
Published: 2020-05-13T19:15:12.33+00:00
License: https://creativecommons.org/publicdomain/zero/1.0/

MEDIUMCVSS 5.4/10EPSS 0.43%

Last modified Jun 17, 2026

CVE-2020-1993 is a medium-severity vulnerability rated 5.4/10 on the CVSS scale. 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.. EPSS estimates a 0.43% chance of exploitation in the next 30 days.

Description

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.

Metrics

CVSS 3.1

5.4/10

CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:L/I:L/A:N

EPSS Probability

0.43%

34.6th percentile

Probability of exploitation in the next 30 days. Learn more

Weakness Enumeration

Affected Software

Vendor	Product	Versions
Paloaltonetworks	Pan-Os	>= 7.1.0, <= 7.1.26
Paloaltonetworks	Pan-Os	>= 8.0.0, <= 8.0.20
Paloaltonetworks	Pan-Os	>= 8.1.0, <= 8.1.13
Paloaltonetworks	Pan-Os	>= 9.0.0, <= 9.0.7

References

https://security.paloaltonetworks.com/CVE-2020-1993Vendor Advisory
https://security.paloaltonetworks.com/CVE-2020-1993Vendor Advisory

Timeline

Published: May 13, 2020
Last Modified: Jun 17, 2026
Status: Modified

Frequently Asked Questions

What is CVE-2020-1993?

How severe is CVE-2020-1993?

CVE-2020-1993 has a CVSS score of 5.4/10 (MEDIUM severity). The EPSS model estimates a 0.43% probability of exploitation in the next 30 days.

How do I fix CVE-2020-1993?

Check the vendor references and advisories linked above for patched versions and mitigation guidance. You can also run a Strix scan to test if your systems are affected.

Are you affected by CVE-2020-1993?

Run a free Strix scan to check your systems for this vulnerability.

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Source: NVD / NIST