Cross-site scripting in Fortinet FortiClientEMS
Priority LOW 26CWE-79Published · Updated
Key facts
- Attack vector
- Network
- Privileges required
- Low
- User interaction
- Required
- Attack complexity
- Low
- Impact type
- Cross-site scripting
- Confidentiality · integrity · availability
- Low · Low · None
- Fix status
- No fix listed
Attack profile from CVSS 3.1 · NVD. Fix status from CNA. Impact type from CWE-79.
Summary
An improper neutralization of input vulnerability [CWE-79] in FortiClientEMS versions 6.4.1 and below and 6.2.9 and below may allow a remote authenticated attacker to inject malicious script/tags via the name parameter of various sections of the server.
Why it matters now
Exploitation None reported CISA SSVC · not in CISA KEV
EPSS 0.00735 54th 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 FortiClientEMS | FortiClientEMS 6.4.1, 6.4.0, 6.2.9, 6.2.8, 6.2.7, 6.2.6, 6.2.4, 6.2.3, 6.2.2, 6.2.1, 6.2.0, 6.0.8, 6.0.6, 6.0.5, 6.0.4, 6.0.3, 6.0.2, 6.0.1, 6.0.0 | — | No fix listed | CNA |
- Fortinet FortiClientEMS VendorFortinet Affected FortiClientEMS 6.4.1, 6.4.0, 6.2.9, 6.2.8, 6.2.7, 6.2.6, 6.2.4, 6.2.3, 6.2.2, 6.2.1, 6.2.0, 6.0.8, 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
| CPE | Versions | Role | Vendor |
|---|---|---|---|
| cpe:2.3:a:fortinet:forticlient_enterprise_management_server:*:*:*:*:*:*:*:* | 6.0.0 – 6.0.8; 6.2.0 – 6.2.9; 6.4.0 – 6.4.1 | Vulnerable | Fortinet |
- cpe:2.3:a:fortinet:forticlient_enterprise_management_server:*:*:*:*:*:*:*:* Versions 6.0.0 – 6.0.8; 6.2.0 – 6.2.9; 6.4.0 – 6.4.1 Vulnerable ·Fortinet
Remediation
No fixed version listed by the sources yet.
Timeline
- 2026-10-02 Threatist record created from CVE-2020-15940
- 2026-10-03 Alias added: GHSA-4g23-3mc5-9qf9
References
More Fortinet Forticlient Enterprise Management Server vulnerabilities
- TI-2023-26617 SQL injection in Fortinet FortiClientEMS KEVCVSS 3.1CRITICAL 9.8
- TI-2024-22101 Command injection in Fortinet FortiClientEMS CVSS 3.1HIGH 7.3
- TI-2021-17894 Authentication bypass by capture-replay in Fortinet FortiClientEMS CVSS 3.1CRITICAL 9.1
- TI-2023-24385 Improper privilege management in Fortinet FortiClientEMS CVSS 3.1HIGH 7.9
- TI-2021-12263 Uncontrolled search path in Fortinet FortiClientWindows, FortiClientEMS CVSS 3.1HIGH 7.8
- TI-2021-14607 A missing encryption of sensitive data in Fortinet FortiClientEMS version 7.0.1 and… CVSS 3.1MEDIUM 6.8
Sources
- CVE-2020-15940 · CVE Program
- CVE-2020-15940 · NVD
- FIRST EPSS
- GHSA-4g23-3mc5-9qf9 · 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