Medium 5.4Published Jun 25, 2013

CVE-2013-4669FortiClient before 4.3.5.472 on Windows, before 4.0.3.134 on Mac OS X, and before 4.0 on Android; FortiClient Lite before 4.3.4.461 on Windows; FortiClient Lite 2.0 through 2.0.0223 on Android; and F…

Updated under an hour ago (Nov 2, 2026, 12:10 AM ET)

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It affects fortinet forticlient and 2 other products. Add what you run to find out whether that includes you.

No exploitation reported and no EPSS estimate yet.

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Start free and add your stackFree account, 3 products Every CVE for fortinet forticlient Exploited in the last 30 days

FortiClient before 4.3.5.472 on Windows, before 4.0.3.134 on Mac OS X, and before 4.0 on Android; FortiClient Lite before 4.3.4.461 on Windows; FortiClient Lite 2.0 through 2.0.0223 on Android; and FortiClient SSL VPN before 4.0.2258 on Linux proceed with an SSL session after determining that the server's X.509 certificate is invalid, which allows man-in-the-middle attackers to obtain sensitive information by leveraging a password transmission that occurs before the user warning about the certificate problem.

CVSS: 5.4 MEDIUM (v2.0, NVD)AV:N/AC:H/Au:N/C:C/I:N/A:N
Weakness (CWE): CWE-255, CWE-310
Known exploited: Not in CISA's KEV catalog
EPSS (exploitation in the next 30 days): Not loaded for this CVE
Assigned by: Not given
NVD analysis: Modified
Record last updated: Jun 16, 2026
First seen by InfoSec Signals: Nov 1, 2026

Affected products

Affected products

fortinet forticlient fortinet:forticlient	through 4.3.3.445; through 4.0.2	NVD
fortinet forticlient_lite fortinet:forticlient_lite	through 4.3.3.445; through 2.0	NVD
fortinet forticlient_ssl_vpn fortinet:forticlient_ssl_vpn	through 4.0.2012	NVD

References

References

http://archives.neohapsis.com/archives/fulldisclosure/2013-05/0001.html
http://objectif-securite.ch/forticlient_bulletin.php
http://www.fortiguard.com/advisory/Potential-Man-In-The-Middle-Vulnerability-in-FortiClient-VPN/
http://www.securityfocus.com/bid/59604

The CVE record on cve.org NVD's entry

The CVE record is authoritative. Products marked “from the name” were identified from the CNA's free-text names, not a CPE, and are matched less certainly. This product uses the NVD API but is not endorsed or certified by the NVD.