CVE-2021-26089

HighCVSS 7.8/10Last modified Jun 17, 2026

Description

An improper symlink following in FortiClient for Mac 6.4.3 and below may allow an non-privileged user to execute arbitrary privileged shell commands during installation phase.

Metrics

CVSS 3.1 7.8/10CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H

Weakness enumeration

CWE-59

Affected software

Vendor	Product	Versions
Fortinet	Fortinet FortiClientMac	FortiClientMac 6.4.3 and below

References

https://fortiguard.com/advisory/FG-IR-21-022Vendor Advisory
https://www.zerodayinitiative.com/advisories/ZDI-22-078/Third Party Advisory, VDB Entry
https://fortiguard.com/advisory/FG-IR-21-022Vendor Advisory
https://www.zerodayinitiative.com/advisories/ZDI-22-078/Third Party Advisory, VDB Entry

Timeline

Published: Jul 12, 2021
Last modified: Jun 17, 2026
NVD status: Modified

Related CVEs from 2021

CVE-2021-260907.5A missing release of memory after its effective lifetime vulnerability in the Webmail of FortiMail 6.4.0 through 6.4.4 and 6.2.0 through 6.2 CVE-2021-260917.5A use of a cryptographically weak pseudo-random number generator vulnerability in the authenticator of the Identity Based Encryption service CVE-2021-260926.1Failure to sanitize input in the SSL VPN web portal of FortiOS 5.2.10 through 5.2.15, 5.4.0 through 5.4.13, 5.6.0 through 5.6.14, 6.0.0 thro CVE-2021-260936.5An access of uninitialized pointer (CWE-824) vulnerability in FortiWLC versions 8.6.0, 8.5.3 and earlier may allow a local and authenticated CVE-2021-260958.8The combination of various cryptographic issues in the session management of FortiMail 6.4.0 through 6.4.4 and 6.2.0 through 6.2.6, includin CVE-2021-260968.8Multiple instances of heap-based buffer overflow in the command shell of FortiSandbox before 4.0.0 may allow an authenticated attacker to ma CVE-2021-260978.8An improper neutralization of special elements used in an OS Command vulnerability in FortiSandbox 3.2.0 through 3.2.2, 3.1.0 through 3.1.4,CVE-2021-260987.5An instance of small space of random values in the RPC API of FortiSandbox before 4.0.0 may allow an attacker in possession of a few informa CVE-2021-260994.9Missing cryptographic steps in the Identity-Based Encryption service of FortiMail before 7.0.0 may allow an attacker who comes in possession CVE-2021-261007.5A missing cryptographic step in the Identity-Based Encryption service of FortiMail before 7.0.0 may allow an unauthenticated attacker who in CVE-2021-261029.1A relative path traversal vulnerability (CWE-23) in FortiWAN version 4.5.7 and below, 4.4 all versions may allow a remote non-authenticated CVE-2021-261038.8An insufficient verification of data authenticity vulnerability (CWE-345) in the user interface of FortiProxy verison 2.0.3 and below, 1.2.1