CVE-2017-17543

mediumpriority · track · 30EPSS 0.004 · 38 %ileEUUS

grimoire priorityP3 · Track

Exploitable?

—

no known exploitation

Likely / severe?

0.44% (38th) EPSS

CVSS 5 · medium

Is it mine?

5 products

Check your exposure

Who says so?

3 sources

cnnvd · enisa_euvd · nvd

EPSS · scored 2026-10-27

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

Technical severity, 0–10. One row per scoring source.

7.5

010

base score 0–10 · higher = more severe · hover a vector to decode⚠ sources disagree · medium–high · 5–7.5

v2.05mediumAV:N/AC:L/Au:N/C:P/I:N/A:Nprimary · NVD / NIST USexploitability 10 · impact 2.9

v3.07.5highCVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:Nprimary · NVD / NIST USexploitability 3.9 · impact 3.6

v3.06.9mediumCVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N/E:Usecondary · CVSS-BT (t0sche)

ssvc

A stakeholder decision — act, attend, or track — from exploitation and impact.

Exploitation: none · Automatable: yes · Technical Impact: partialcoordinatorcisa_ssvcUS

weaknesses

The CWE weakness classes this flaw belongs to.

CWE-326USprimary

affected products (5)

Products and version ranges known to be affected.

Fortinet, Inc. FortiClient SSLVPN Client for Linux≤ 4.4.2335 and below versionsenisa_euvdEU
Fortinet, Inc. FortiClient for Mac OSX≤ 5.6.0 and below versionsenisa_euvdEU
Fortinet, Inc. FortiClient for Windows≤ 5.6.0 and below versionsenisa_euvdEU
fortinet forticlient≤ 5.6.0nvdUScpe:2.3:a:fortinet:forticlient:*:*:*:*:*:*:*:*
fortinet forticlient sslvpn client≤ 4.4.2335nvdUScpe:2.3:a:fortinet:forticlient_sslvpn_client:*:*:*:*:*:*:*:*

also known as (3)

Other names and identifiers for this entity.

sources

Which sources assert this record, and when.

cnnvd enisa_euvd nvd NVD CVE.org MITRE

published 2018-04-26modified 2026-06-17

related (696)

Related entries.

ID	severity	EPSS	exploitable	published
CVE-2018-18325US	high7.5OT critical	74.0% (99th)	KEV	2019-07-03
DNN (aka DotNetNuke) 9.2 through 9.2.2 uses a weak encryption algorithm to protect input parameters. NOTE: this issue exists because of an incomplete fix for CVE-2018-15811.
CVE-2018-15811US	high7.5OT critical	76.3% (100th)	KEV	2019-07-03
DNN (aka DotNetNuke) 9.2 through 9.2.1 uses a weak encryption algorithm to protect input parameters.
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Primetek Primefaces 5.x is vulnerable to a weak encryption flaw resulting in remote code execution
CVE-2017-11317US	critical9.8OT critical	84.2% (100th)	KEV	2017-08-23
Telerik.Web.UI in Progress Telerik UI for ASP.NET AJAX before R1 2017 and R2 before R2 2017 SP2 uses weak RadAsyncUpload encryption, which allows remote attackers to perform arbitr…
CVE-2016-2183US	high7.5OT high	94.7% (100th)	Exploit	2016-09-01
The DES and Triple DES ciphers, as used in the TLS, SSH, and IPSec protocols and other protocols and products, have a birthday bound of approximately four billion blocks, which mak…

+691 more

references (4)

External citations — patches, advisories, analysis.

scry

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