A improper control of a resource through its lifetime in Fortinet FortiClientWindows…
Priority LOW 20Published · Updated
Key facts
- Attack vector
- Local
- Privileges required
- High
- User interaction
- None
- Attack complexity
- Low
- Impact type
- —
- Confidentiality · integrity · availability
- None · None · High
- Fix status
- No fix listed
Attack profile from CVSS 3.1 · CNA. Fix status from CNA.
Summary
A improper control of a resource through its lifetime in Fortinet FortiClientWindows version 6.4.1 and 6.4.0, version 6.2.9 and below, version 6.0.10 and below allows attacker to cause a complete denial of service of its components via changes of directory access permissions.
Why it matters now
Exploitation None reported CISA SSVC · not in CISA KEV
EPSS 0.00356 29th 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
| Vendor | Product | Affected versions | Fixed in | Status | Source |
|---|---|---|---|---|---|
| Fortinet | Fortinet FortiClientWindows | FortiClientWindows 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, 5.6.6, 5.6.5, 5.6.4, 5.6.3, 5.6.2, 5.6.1, 5.6.0, 5.4.5, 5.4.4, 5.4.3, 5.4.2, 5.4.1, 5.4.0, 5.2.6, 5.2.5, 5.2.4, 5.2.3, 5.2.2, 5.2.1, 5.2.0, 5.0.11, 5.0.10, 5.0.9, 5.0.8, 5.0.7, 5.0.6, 5.0.5, 5.0.4, 5.0.3, 5.0.2, 5.0.1, 5.0.0, 4.3.5, 4.3.4, 4.3.3, 4.3.2, 4.3.1, 4.3.0, 4.2.7, 4.2.6, 4.2.5, 4.2.4, 4.2.3, 4.2.2, 4.2.1, 4.2.0, 4.1.3, 4.1.2, 4.1.1, 4.1.0, 4.0.4, 4.0.3, 4.0.2, 4.0.1 | — | No fix listed | CNA |
- Fortinet FortiClientWindows VendorFortinet Affected FortiClientWindows 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, 5.6.6, 5.6.5, 5.6.4, 5.6.3, 5.6.2, 5.6.1, 5.6.0, 5.4.5, 5.4.4, 5.4.3, 5.4.2, 5.4.1, 5.4.0, 5.2.6, 5.2.5, 5.2.4, 5.2.3, 5.2.2, 5.2.1, 5.2.0, 5.0.11, 5.0.10, 5.0.9, 5.0.8, 5.0.7, 5.0.6, 5.0.5, 5.0.4, 5.0.3, 5.0.2, 5.0.1, 5.0.0, 4.3.5, 4.3.4, 4.3.3, 4.3.2, 4.3.1, 4.3.0, 4.2.7, 4.2.6, 4.2.5, 4.2.4, 4.2.3, 4.2.2, 4.2.1, 4.2.0, 4.1.3, 4.1.2, 4.1.1, 4.1.0, 4.0.4, 4.0.3, 4.0.2, 4.0.1 Fixed in — No fix listed CNA
CPE configurations NVD · 32
| CPE | Versions | Role | Vendor |
|---|---|---|---|
| cpe:2.3:a:fortinet:forticlient:*:*:*:*:*:windows:*:* | 5.0.0 – 5.0.11; 5.4.0 – 5.4.5; 5.6.0 – 5.6.6; 6.0.0 – 6.0.10; 6.2.0 – 6.2.9 | Vulnerable | Fortinet |
| cpe:2.3:a:fortinet:forticlient:4.0.1:*:*:*:*:windows:*:* | 4.0.1 | Vulnerable | Fortinet |
| cpe:2.3:a:fortinet:forticlient:4.0.2:*:*:*:*:windows:*:* | 4.0.2 | Vulnerable | Fortinet |
| cpe:2.3:a:fortinet:forticlient:4.0.3:*:*:*:*:windows:*:* | 4.0.3 | Vulnerable | Fortinet |
| cpe:2.3:a:fortinet:forticlient:4.0.4:*:*:*:*:windows:*:* | 4.0.4 | Vulnerable | Fortinet |
| cpe:2.3:a:fortinet:forticlient:4.1.0:*:*:*:*:windows:*:* | 4.1.0 | Vulnerable | Fortinet |
| cpe:2.3:a:fortinet:forticlient:4.1.1:*:*:*:*:windows:*:* | 4.1.1 | Vulnerable | Fortinet |
| cpe:2.3:a:fortinet:forticlient:4.1.2:*:*:*:*:windows:*:* | 4.1.2 | Vulnerable | Fortinet |
| cpe:2.3:a:fortinet:forticlient:4.1.3:*:*:*:*:windows:*:* | 4.1.3 | Vulnerable | Fortinet |
| cpe:2.3:a:fortinet:forticlient:4.2.0:*:*:*:*:windows:*:* | 4.2.0 | Vulnerable | Fortinet |
- cpe:2.3:a:fortinet:forticlient:*:*:*:*:*:windows:*:* Versions 5.0.0 – 5.0.11; 5.4.0 – 5.4.5; 5.6.0 – 5.6.6; 6.0.0 – 6.0.10; 6.2.0 – 6.2.9 Vulnerable ·Fortinet
- cpe:2.3:a:fortinet:forticlient:4.0.1:*:*:*:*:windows:*:* Versions 4.0.1 Vulnerable ·Fortinet
- cpe:2.3:a:fortinet:forticlient:4.0.2:*:*:*:*:windows:*:* Versions 4.0.2 Vulnerable ·Fortinet
- cpe:2.3:a:fortinet:forticlient:4.0.3:*:*:*:*:windows:*:* Versions 4.0.3 Vulnerable ·Fortinet
- cpe:2.3:a:fortinet:forticlient:4.0.4:*:*:*:*:windows:*:* Versions 4.0.4 Vulnerable ·Fortinet
- cpe:2.3:a:fortinet:forticlient:4.1.0:*:*:*:*:windows:*:* Versions 4.1.0 Vulnerable ·Fortinet
- cpe:2.3:a:fortinet:forticlient:4.1.1:*:*:*:*:windows:*:* Versions 4.1.1 Vulnerable ·Fortinet
- cpe:2.3:a:fortinet:forticlient:4.1.2:*:*:*:*:windows:*:* Versions 4.1.2 Vulnerable ·Fortinet
- cpe:2.3:a:fortinet:forticlient:4.1.3:*:*:*:*:windows:*:* Versions 4.1.3 Vulnerable ·Fortinet
- cpe:2.3:a:fortinet:forticlient:4.2.0:*:*:*:*:windows:*:* Versions 4.2.0 Vulnerable ·Fortinet
Show 22 more CPE
| CPE | Versions | Role | Vendor |
|---|---|---|---|
| cpe:2.3:a:fortinet:forticlient:4.2.1:*:*:*:*:windows:*:* | 4.2.1 | Vulnerable | Fortinet |
| cpe:2.3:a:fortinet:forticlient:4.2.2:*:*:*:*:windows:*:* | 4.2.2 | Vulnerable | Fortinet |
| cpe:2.3:a:fortinet:forticlient:4.2.3:*:*:*:*:windows:*:* | 4.2.3 | Vulnerable | Fortinet |
| cpe:2.3:a:fortinet:forticlient:4.2.4:*:*:*:*:windows:*:* | 4.2.4 | Vulnerable | Fortinet |
| cpe:2.3:a:fortinet:forticlient:4.2.5:*:*:*:*:windows:*:* | 4.2.5 | Vulnerable | Fortinet |
| cpe:2.3:a:fortinet:forticlient:4.2.6:*:*:*:*:windows:*:* | 4.2.6 | Vulnerable | Fortinet |
| cpe:2.3:a:fortinet:forticlient:4.2.7:*:*:*:*:windows:*:* | 4.2.7 | Vulnerable | Fortinet |
| cpe:2.3:a:fortinet:forticlient:4.3.0:*:*:*:*:windows:*:* | 4.3.0 | Vulnerable | Fortinet |
| cpe:2.3:a:fortinet:forticlient:4.3.1:*:*:*:*:windows:*:* | 4.3.1 | Vulnerable | Fortinet |
| cpe:2.3:a:fortinet:forticlient:4.3.2:*:*:*:*:windows:*:* | 4.3.2 | Vulnerable | Fortinet |
| cpe:2.3:a:fortinet:forticlient:4.3.3:*:*:*:*:windows:*:* | 4.3.3 | Vulnerable | Fortinet |
| cpe:2.3:a:fortinet:forticlient:4.3.4:*:*:*:*:windows:*:* | 4.3.4 | Vulnerable | Fortinet |
| cpe:2.3:a:fortinet:forticlient:4.3.5:*:*:*:*:windows:*:* | 4.3.5 | Vulnerable | Fortinet |
| cpe:2.3:a:fortinet:forticlient:5.2.0:*:*:*:*:windows:*:* | 5.2.0 | Vulnerable | Fortinet |
| cpe:2.3:a:fortinet:forticlient:5.2.1:*:*:*:*:windows:*:* | 5.2.1 | Vulnerable | Fortinet |
| cpe:2.3:a:fortinet:forticlient:5.2.2:*:*:*:*:windows:*:* | 5.2.2 | Vulnerable | Fortinet |
| cpe:2.3:a:fortinet:forticlient:5.2.3:*:*:*:*:windows:*:* | 5.2.3 | Vulnerable | Fortinet |
| cpe:2.3:a:fortinet:forticlient:5.2.4:*:*:*:*:windows:*:* | 5.2.4 | Vulnerable | Fortinet |
| cpe:2.3:a:fortinet:forticlient:5.2.5:*:*:*:*:windows:*:* | 5.2.5 | Vulnerable | Fortinet |
| cpe:2.3:a:fortinet:forticlient:5.2.6:*:*:*:*:windows:*:* | 5.2.6 | Vulnerable | Fortinet |
| cpe:2.3:a:fortinet:forticlient:6.4.0:*:*:*:*:windows:*:* | 6.4.0 | Vulnerable | Fortinet |
| cpe:2.3:a:fortinet:forticlient:6.4.1:*:*:*:*:windows:*:* | 6.4.1 | Vulnerable | Fortinet |
- cpe:2.3:a:fortinet:forticlient:4.2.1:*:*:*:*:windows:*:* Versions 4.2.1 Vulnerable ·Fortinet
- cpe:2.3:a:fortinet:forticlient:4.2.2:*:*:*:*:windows:*:* Versions 4.2.2 Vulnerable ·Fortinet
- cpe:2.3:a:fortinet:forticlient:4.2.3:*:*:*:*:windows:*:* Versions 4.2.3 Vulnerable ·Fortinet
- cpe:2.3:a:fortinet:forticlient:4.2.4:*:*:*:*:windows:*:* Versions 4.2.4 Vulnerable ·Fortinet
- cpe:2.3:a:fortinet:forticlient:4.2.5:*:*:*:*:windows:*:* Versions 4.2.5 Vulnerable ·Fortinet
- cpe:2.3:a:fortinet:forticlient:4.2.6:*:*:*:*:windows:*:* Versions 4.2.6 Vulnerable ·Fortinet
- cpe:2.3:a:fortinet:forticlient:4.2.7:*:*:*:*:windows:*:* Versions 4.2.7 Vulnerable ·Fortinet
- cpe:2.3:a:fortinet:forticlient:4.3.0:*:*:*:*:windows:*:* Versions 4.3.0 Vulnerable ·Fortinet
- cpe:2.3:a:fortinet:forticlient:4.3.1:*:*:*:*:windows:*:* Versions 4.3.1 Vulnerable ·Fortinet
- cpe:2.3:a:fortinet:forticlient:4.3.2:*:*:*:*:windows:*:* Versions 4.3.2 Vulnerable ·Fortinet
- cpe:2.3:a:fortinet:forticlient:4.3.3:*:*:*:*:windows:*:* Versions 4.3.3 Vulnerable ·Fortinet
- cpe:2.3:a:fortinet:forticlient:4.3.4:*:*:*:*:windows:*:* Versions 4.3.4 Vulnerable ·Fortinet
- cpe:2.3:a:fortinet:forticlient:4.3.5:*:*:*:*:windows:*:* Versions 4.3.5 Vulnerable ·Fortinet
- cpe:2.3:a:fortinet:forticlient:5.2.0:*:*:*:*:windows:*:* Versions 5.2.0 Vulnerable ·Fortinet
- cpe:2.3:a:fortinet:forticlient:5.2.1:*:*:*:*:windows:*:* Versions 5.2.1 Vulnerable ·Fortinet
- cpe:2.3:a:fortinet:forticlient:5.2.2:*:*:*:*:windows:*:* Versions 5.2.2 Vulnerable ·Fortinet
- cpe:2.3:a:fortinet:forticlient:5.2.3:*:*:*:*:windows:*:* Versions 5.2.3 Vulnerable ·Fortinet
- cpe:2.3:a:fortinet:forticlient:5.2.4:*:*:*:*:windows:*:* Versions 5.2.4 Vulnerable ·Fortinet
- cpe:2.3:a:fortinet:forticlient:5.2.5:*:*:*:*:windows:*:* Versions 5.2.5 Vulnerable ·Fortinet
- cpe:2.3:a:fortinet:forticlient:5.2.6:*:*:*:*:windows:*:* Versions 5.2.6 Vulnerable ·Fortinet
- cpe:2.3:a:fortinet:forticlient:6.4.0:*:*:*:*:windows:*:* Versions 6.4.0 Vulnerable ·Fortinet
- cpe:2.3:a:fortinet:forticlient:6.4.1:*:*:*:*:windows:*:* Versions 6.4.1 Vulnerable ·Fortinet
Remediation
No fixed version listed by the sources yet.
Timeline
- 2026-10-02 Threatist record created from CVE-2021-43204
- 2026-10-03 Alias added: GHSA-fqqh-g3vm-m5g2
References
More Fortinet Forticlient vulnerabilities
- 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
Sources
- CVE-2021-43204 · CVE Program
- CVE-2021-43204 · NVD
- FIRST EPSS
- GHSA-fqqh-g3vm-m5g2 · GitHub Advisory Database · CC BY 4.0
This product uses the NVD API but is not endorsed or certified by the NVD. Sources and licences