CVE-2020-9291

Name: CVE-2020-9291
Creator: NVD / NIST
Published: 2020-06-01T19:15:10.19+00:00
License: https://creativecommons.org/publicdomain/zero/1.0/

HIGHCVSS 7.8/10EPSS 0.51%

Last modified Jun 17, 2026

CVE-2020-9291 is a high-severity vulnerability rated 7.8/10 on the CVSS scale. An Insecure Temporary File vulnerability in FortiClient for Windows 6.2.1 and below may allow a local user to gain elevated privileges via exhausting the pool of temporary file names combined with a symbolic link attack.. EPSS estimates a 0.51% chance of exploitation in the next 30 days.

Description

An Insecure Temporary File vulnerability in FortiClient for Windows 6.2.1 and below may allow a local user to gain elevated privileges via exhausting the pool of temporary file names combined with a symbolic link attack.

Metrics

CVSS 3.1

7.8/10

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

EPSS Probability

0.51%

39.3th percentile

Probability of exploitation in the next 30 days. Learn more

Weakness Enumeration

CWE-668

Affected Software

Vendor	Product	Versions
Fortinet	Forticlient	<= 6.0.9
Fortinet	Forticlient	>= 6.2.0, <= 6.2.1

References

https://fortiguard.com/psirt/FG-IR-20-040Broken Link
https://www.fortiguard.com/psirt/FG-IR-20-040Vendor Advisory
https://fortiguard.com/psirt/FG-IR-20-040Broken Link

Timeline

Published: Jun 1, 2020
Last Modified: Jun 17, 2026
Status: Modified

Frequently Asked Questions

What is CVE-2020-9291?

How severe is CVE-2020-9291?

CVE-2020-9291 has a CVSS score of 7.8/10 (HIGH severity). The EPSS model estimates a 0.51% probability of exploitation in the next 30 days.

How do I fix CVE-2020-9291?

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-2020-9291?

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

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Source: NVD / NIST