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TI-2021-19129 Aliases CVE-2021-43066GHSA-726x-mfp5-rvmh

Exposure of resource to wrong sphere in Fortinet FortiClientWindows

Priority LOW 36CWE-668Published · Updated

Key facts

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

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

Summary

A external control of file name or path in Fortinet FortiClientWindows version 7.0.2 and below, version 6.4.6 and below, version 6.2.9 and below, version 6.0.10 and below allows attacker to escalate privilege via the MSI installer.

Why it matters now

Exploitation None reported CISA SSVC · not in CISA KEV
EPSS 0.00224 13th 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
Partial

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

Affected products

VendorProductAffected versionsFixed inStatusSource
FortinetFortinet FortiClientWindowsFortiClientWindows 7.0.2 7.0.1, 7.0.0, 6.4.6, 6.4.5, 6.4.4, 6.4.3, 6.4.2, 6.4.1, 6.4.0, 6.2.9, 6.2.8, 6.2.7, 6.2.6, 6.2.5, 6.2.4, 6.2.3, 6.2.2, 6.2.1, 6.2.0, 6.0.10, 6.0.9, 6.0.8, 6.0.7, 6.0.6, 6.0.5, 6.0.4, 6.0.3, 6.0.2, 6.0.1, 6.0.0—No fix listedCNA
  • Fortinet FortiClientWindows VendorFortinet Affected FortiClientWindows 7.0.2 7.0.1, 7.0.0, 6.4.6, 6.4.5, 6.4.4, 6.4.3, 6.4.2, 6.4.1, 6.4.0, 6.2.9, 6.2.8, 6.2.7, 6.2.6, 6.2.5, 6.2.4, 6.2.3, 6.2.2, 6.2.1, 6.2.0, 6.0.10, 6.0.9, 6.0.8, 6.0.7, 6.0.6, 6.0.5, 6.0.4, 6.0.3, 6.0.2, 6.0.1, 6.0.0 Fixed in — No fix listed CNA

CPE configurations NVD · 1

CPEVersionsRoleVendor
cpe:2.3:a:fortinet:forticlient:*:*:*:*:*:windows:*:*6.0.0 to before 6.4.7; 7.0.0 to before 7.0.3VulnerableFortinet
  • cpe:2.3:a:fortinet:forticlient:*:*:*:*:*:windows:*:* Versions 6.0.0 to before 6.4.7; 7.0.0 to before 7.0.3 Vulnerable ·Fortinet

Remediation

No fixed version listed by the sources yet.

Timeline

  1. 2026-10-02 Threatist record created from CVE-2021-43066
  2. 2026-10-03 Alias added: GHSA-726x-mfp5-rvmh

References

Advisory 1

  • 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