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CVE-2013-4669

16
FAUCET Score

CVE-2013-4669 describes a vulnerability in FortiClient and FortiClient Lite products across Windows, Mac OS X, Android, and Linux platforms. The flaw allows these applications to proceed with an SSL session despite an invalid server X.509 certificate, enabling man-in-the-middle (MitM) attacks. With a CVSS score of 5.4 (Medium), this vulnerability has a high confidentiality impact (C:C) due to the potential for sensitive information disclosure, particularly password transmissions, before a user warning is displayed. There is no evidence of active exploitation, public exploit code (Metasploit, Nuclei, ExploitDB), or significant community discussion or media coverage surrounding this CVE.

Impacted Technologies

VendorProductVersion(s)CPE
<= 4.3.3.445CPE matchmatch criteria
cpe:2.3:a:fortinet:forticlient:*:*:*:*:*:*:*:*
<= 4.3.3.445CPE matchmatch criteria
cpe:2.3:a:fortinet:forticlient_lite:*:*:*:*:*:*:*:*
<= 4.0.2012CPE matchmatch criteria
cpe:2.3:a:fortinet:forticlient_ssl_vpn:*:*:*:*:*:*:*:*
<= 4.0.2CPE matchmatch criteria
cpe:2.3:a:fortinet:forticlient:*:*:*:*:*:*:*:*
<= 2.0CPE matchmatch criteria
cpe:2.3:a:fortinet:forticlient_lite:*:*:*:*:*:*:*:*

CVSS Data

CVSS version used by this source: 2.0

5.4MEDIUM

AV:N/AC:H/Au:N/C:C/I:N/A:N

Confidentiality Impact
COMPLETE
Integrity Impact
NONE
Availability Impact
NONE
Access Vector
NETWORK
Access Complexity
HIGH
Authentication
NONE
Exploitability Score
4.9
Impact Score
6.9
CvssVersion
2.0

Exploit Intelligence

EPSS Score
0.87%
Probability of exploitation in next 30 days
EPSS Percentile
55.0%
Percentile rank of EPSS score among Peer Group
As of 2026-07-27
Model: v2026.06.15
This CVE's current EPSS score of 0.0087 is in the 13th percentile among its peer group of 19,958 CVEs.

Social Chatter

No social media mentions found for this CVE.

The average CVE in this peer group has 0.0 Twitter, 0.0 Reddit, 0.0 Bluesky, 0.0 Mastodon, and 0.2 GitHub mentions.

Media Mentions

No media coverage found for this CVE.

The average CVE in this peer group has 0.0 InfoSec Media, 0.0 Vendor Blog, and 0.0 Security Researcher mentions.

Remediation

Remediation records are not available for this CVE.

References

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