TI-2021-08041 Aliases CVE-2021-26089 GHSA-778f-2fc2-jrq9

Link following in Fortinet FortiClientMac

LOW 36CWE-59Published 2021-07-12 · Updated 2024-10-25

Key facts

Attack vector: Local
Privileges required: Low
User interaction: None
Attack complexity: Low
Impact type: —
Confidentiality · integrity · availability: High · High · High
Fix status: No fix listed

Attack profile from CVSS 3.1 · NVD. Fix status from CNA.

Summary

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.

Why it matters now

Exploitation None reported CISA SSVC · not in CISA KEV

EPSS 0.00426 37th percentileScored 2026-11-07

Fix No fix listed No fixed version in the sources yet

SSVC decision points

CISA ADP · SSVC 2.0.3

Exploitation: None
Automatable: No
Technical impact: Total

The decision (Track, Attend, Act) also depends on your mission and well-being impact; see CISA's SSVC guide.

Affected products

Vendor	Product	Affected versions	Fixed in	Status	Source
Fortinet	Fortinet FortiClientMac	FortiClientMac 6.4.3 and below	—	No fix listed	CNA

Fortinet FortiClientMac VendorFortinet Affected FortiClientMac 6.4.3 and below Fixed in — No fix listed CNA

CPE configurations NVD · 1

CPE	Versions	Role	Vendor
cpe:2.3:a:fortinet:forticlient::::::macos::*	up to 6.4.3	Vulnerable	Fortinet

cpe:2.3:a:fortinet:forticlient:*:*:*:*:*:macos:*:* Versions up to 6.4.3 Vulnerable ·Fortinet

Remediation

No fixed version listed by the sources yet.

Timeline

2026-10-02 Threatist record created from CVE-2021-26089
2026-10-03 Alias added: GHSA-778f-2fc2-jrq9

References

Advisory 2

TI-2019-13180 An unquoted service path vulnerability in the FortiClient FortiTray component of… CVSS 3.1CRITICAL 9.8
TI-2023-24393 Code injection in Fortinet FortiClientLinux CVSS 3.1CRITICAL 9.4
TI-2017-10335 Information disclosure in Fortinet FortiClient for Windows CVSS 3.0HIGH 8.8
TI-2016-06998 In FortiClientWindows 5.4.1 and 5.4.2, an attacker may escalate privilege via a FortiClientNamedPipe vulnerability. CVSS 3.0HIGH 8.8
TI-2019-03954 Untrusted search path in Fortinet FortiClientWindows CVSS 3.1HIGH 8.6
TI-2017-05007 A privilege escalation in Fortinet FortiClient Windows 5.4.3 and earlier as well as 5.6.0… CVSS 3.0HIGH 8.1

See all 85 →

Sources

This product uses the NVD API but is not endorsed or certified by the NVD. Sources and licences