What is the severity of CVE-2021-26089?

The severity of CVE-2021-26089 is high, with a CVSS score of 7.8.

What is the vulnerability description for CVE-2021-26089?

CVE-2021-26089 is a privilege escalation vulnerability in Fortinet FortiClient Network Access Control, allowing local attackers to escalate privileges on affected installations.

How can this vulnerability be exploited?

To exploit CVE-2021-26089, an attacker must first execute low-privileged code on the target system.

Which versions of Fortinet FortiClient are affected by CVE-2021-26089?

Fortinet FortiClient versions up to and including 6.4.3 on macOS are affected by CVE-2021-26089.

Where can I find more information about CVE-2021-26089?

You can find more information about CVE-2021-26089 on the FortiGuard advisory and Zero Day Initiative advisories.

Vulnerability/
CVE-2021-26089

high

7.8

CWE

7/7/2021

12/7/2021

30/3/2022

21/10/2023

CVE-2021-26089: Fortinet FortiClient Network Access Control Uncontrolled Search Path Element Privilege Escalation Vulnerability

First published: Wed Jul 07 2021(Updated: )

A UNIX symbolic link (Symlink) Following (CWE-61) vulnerability in FortiClient for MacOS may allow a local andÂ unprivileged user toÂ overwrite privileged shell scripts executed during the installation phase via escalatingÂ their privileges to root.

Credit: psirt@fortinet.com

Affected Software	Affected Version	How to fix
Fortinet Forticlient
Fortinet Forticlient	<=6.4.3

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Frequently Asked Questions

What is the severity of CVE-2021-26089?
The severity of CVE-2021-26089 is high, with a CVSS score of 7.8.
What is the vulnerability description for CVE-2021-26089?
CVE-2021-26089 is a privilege escalation vulnerability in Fortinet FortiClient Network Access Control, allowing local attackers to escalate privileges on affected installations.
How can this vulnerability be exploited?
To exploit CVE-2021-26089, an attacker must first execute low-privileged code on the target system.
Which versions of Fortinet FortiClient are affected by CVE-2021-26089?
Fortinet FortiClient versions up to and including 6.4.3 on macOS are affected by CVE-2021-26089.
Where can I find more information about CVE-2021-26089?
You can find more information about CVE-2021-26089 on the FortiGuard advisory and Zero Day Initiative advisories.

collector/zdi-advisory
alias/ZDI-22-078
alias/ZDI-CAN-14137
alias/CVE-2021-26089
collector/nvd-index
agent/author
agent/weakness
agent/title
agent/type
agent/severity
agent/references
agent/description
agent/tags
agent/event
agent/last-modified-date
agent/softwarecombine
agent/first-publish-date
collector/fortiguard-psirt
source/FortiGuard
vendor/fortinet
canonical/fortinet forticlient
version/fortinet forticlient/6.4.3

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