Vulnerability in Fortinet Forticlient
CVE-2021-41028
A combination of a use of hard-coded cryptographic key vulnerability [CWE-321] in FortiClientEMS 7.0.1 and below, 6.4.6 and below and an improper certificate validation vulnerability [CWE-297] in FortiClientWindows, FortiClientLinux and FortiClientMac 7.0.1 and below, 6.4.6 and below may allow an unauthenticated and network adjacent attacker to perform a man-in-the-middle attack between the EMS and the FCT via the telemetry protocol.
Vulnerability class: Improper Certificate Validation
Published · last modified .
CVSS v3 metric
CVSS v3 base score 8.2 (High). Vector: CVSS:3.1/AV:A/AC:H/PR:N/UI:N/S:C/C:L/I:H/A:H.
EPSS exploit prediction
EPSS: 0.002 (12.8th percentile), scored .
Very low probability of exploitation in the next 30 days; routine patching cadence is appropriate. 13th percentile — 12.8% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.
EPSS over last 30 days · oldest: 0.002 · newest: 0.002 · change: +0.000
Affected products
- Fortinet Forticlient — versions 7.0.0, 7.0.1
- Fortinet Forticlient Endpoint Management Server — versions 7.0.0, 7.0.1
- Fortinet Forticlientems, Forticlientwindows, Forticlientlinux, Forticlientmac — versions FortiClientEMS 7.0.1 and below, 6.4.6 and below, FortiClientWindows, FortiClientLinux, FortiClientMac 7.0.1 and below, 6.4.6 and below.
Weakness classification (CWE)
References
- fortiguard.com/advisory/FG-IR-21-075 (Vendor Advisory)
Frequently asked questions
- What is CVE-2021-41028?
- CVE-2021-41028 is a high-severity vulnerability in Fortinet Forticlient, classified under Improper Certificate Validation. CVSS score: 8.2/10. Published 2021-12-16.
- How severe is CVE-2021-41028?
- High severity. CVSS v3 base score is 8.2 out of 10.