← Vulnerability feed

Vulnerability record · CVE-2017-17543 · published 26 April 2018

CVE-2017-17543: Fortinet forticlient inadequate encryption strength vulnerability

Fortinet · Forticlient

Users' VPN authentication credentials are unsafely encrypted in Fortinet FortiClient for Windows 5.6.0 and below versions, FortiClient for Mac OSX 5.6.0 and below versions and FortiClient SSLVPN Client for Linux 4.4.2335 and below versions, due to the use of a static encryption key and weak encryption algorithms.

7.5 CVSS 3.0 High EPSS 0.44% · top 63.4% CWE-326 · Inadequate encryption strength
7.5CVSS 3.0 base score, v2 5.0
0.44%EPSS exploitation probability, 30 days
NoNot in CISA KEV
2Affected product versions listed by NVD
2References
17 Jun 2026Last modified by NVD

Description

Users' VPN authentication credentials are unsafely encrypted in Fortinet FortiClient for Windows 5.6.0 and below versions, FortiClient for Mac OSX 5.6.0 and below versions and FortiClient SSLVPN Client for Linux 4.4.2335 and below versions, due to the use of a static encryption key and weak encryption algorithms.

CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N

Affected products

2 vulnerable configurations from NVD's CPE data, grouped by vendor and product.

References

LinkTags
https://fortiguard.com/advisory/FG-IR-17-214
https://fortiguard.com/advisory/FG-IR-17-214

Track CVE-2017-17543 inside VULONE

Watch it alongside the ransomware crews, C2 infrastructure and forum chatter that reference it, query it through the API and pull it into your SIEM over TAXII.

Start free Open in platform

Related vulnerabilities

Same products first, then exploited flaws of the same weakness class.

9.8CVE-2019-17658Fortinet forticlient unquoted search path vulnerabilityAn unquoted service path vulnerability in the FortiClient FortiTray component of FortiClientWindows v6.2.2 and prior allow an attacker to gain elevat…EPSS 2.2%8.8CVE-2024-36513Fortinet forticlient vulnerabilityA privilege context switching error vulnerability [CWE-270] in FortiClient Windows version 7.2.4 and below, version 7.0.12 and below, 6.4 all version…EPSS 0.22%8.8CVE-2023-45590Fortinet forticlient code injection vulnerabilityAn improper control of generation of code ('code injection') in Fortinet FortiClientLinux version 7.2.0, 7.0.6 through 7.0.10 and 7.0.3 through 7.0.4…EPSS 1.5%8.8CVE-2021-44169Fortinet forticlient vulnerabilityA improper initialization in Fortinet FortiClient (Windows) version 6.0.10 and below, version 6.2.9 and below, version 6.4.7 and below, version 7.0.3…EPSS 0.38%8.8CVE-2019-5589Fortinet forticlient untrusted search path vulnerabilityA untrusted search path vulnerability in Fortinet may allow attacker to execute unauthorized code or commands via network exploitableEPSS 1.0%8.8CVE-2017-14184Fortinet forticlient information exposure vulnerabilityAn Information Disclosure vulnerability in Fortinet FortiClient for Windows 5.6.0 and below versions, FortiClient for Mac OSX 5.6.0 and below version…EPSS 2.1%8.8CVE-2016-8493Fortinet forticlient permissions and access controls vulnerabilityIn FortiClientWindows 5.4.1 and 5.4.2, an attacker may escalate privilege via a FortiClientNamedPipe vulnerability.EPSS 1.8%8.4CVE-2024-52968Fortinet forticlient improper authentication vulnerabilityAn improper authentication in Fortinet FortiClientMac 7.0.11 through 7.2.4 allows attacker to gain improper access to MacOS via empty password.EPSS 0.24%

Source: NIST National Vulnerability Database (record CVE-2017-17543), CISA KEV, FIRST EPSS (scores of 2026-10-14). This page is refreshed as NVD updates the record.