Insufficient session expiration in Fortinet FortiClientEMS
Priority MEDIUM 51CWE-613Published · Updated
Key facts
- Attack vector
- Network
- Privileges required
- None
- User interaction
- None
- Attack complexity
- Low
- Impact type
- Security bypass
- Confidentiality · integrity · availability
- High · High · High
- Fix status
- No fix listed
Attack profile from CVSS 3.1 · NVD. Fix status from CNA. Impact type from CWE-613.
Summary
An insufficient session expiration vulnerability [CWE- 613] in FortiClientEMS versions 6.4.2 and below, 6.2.8 and below may allow an attacker to reuse the unexpired admin user session IDs to gain admin privileges, should the attacker be able to obtain that session ID (via other, hypothetical attacks)
Why it matters now
Exploitation None reported CISA SSVC · not in CISA KEV
EPSS 0.05288 92nd 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 FortiClientEMS | FortiClientEMS 6.4.2, 6.4.1, 6.4.0, 6.2.8, 6.2.7, 6.2.6, 6.2.4, 6.2.3, 6.2.2, 6.2.1, 6.2.0 | — | No fix listed | CNA |
- Fortinet FortiClientEMS VendorFortinet Affected FortiClientEMS 6.4.2, 6.4.1, 6.4.0, 6.2.8, 6.2.7, 6.2.6, 6.2.4, 6.2.3, 6.2.2, 6.2.1, 6.2.0 Fixed in — No fix listed CNA
CPE configurations NVD · 1
| CPE | Versions | Role | Vendor |
|---|---|---|---|
| cpe:2.3:a:fortinet:forticlient_endpoint_management_server:*:*:*:*:*:*:*:* | before 6.2.9; 6.4.0 to before 6.4.2 | Vulnerable | Fortinet |
- cpe:2.3:a:fortinet:forticlient_endpoint_management_server:*:*:*:*:*:*:*:* Versions before 6.2.9; 6.4.0 to before 6.4.2 Vulnerable ·Fortinet
Remediation
No fixed version listed by the sources yet.
Timeline
- 2026-10-02 Threatist record created from CVE-2021-24019
- 2026-10-03 Alias added: GHSA-qw2f-33vp-25mq
- 2026-10-09 EPSS moved to the 90th–95th percentile
References
More Fortinet Forticlient Endpoint Management Server vulnerabilities
- TI-2023-25705 CSV injection in Fortinet FortiClientEMS CVSS 3.1HIGH 8.8
- TI-2021-17892 Improper certificate validation in Fortinet FortiClientEMS, FortiClientWindows… CVSS 3.1HIGH 8.2
- TI-2024-14439 Path traversal in Fortinet FortiClientEMS CVSS 3.1MEDIUM 6.0
- TI-2020-12554 Path traversal in Fortinet FortiClientEMS CVSS 3.1MEDIUM 5.4
- TI-2021-19870 Information disclosure in Fortinet FortiClientEMS CVSS 3.1MEDIUM 5.3
Sources
- CVE-2021-24019 · CVE Program
- CVE-2021-24019 · NVD
- FIRST EPSS
- GHSA-qw2f-33vp-25mq · 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