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CVE-2013-4669

MEDIUM · CVSS 5.4EPSS 0.9%EU EUVD

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.

Key facts

CVSS score
5.4 (v2.0)
Severity
MEDIUM
CVSS vector
AV:N/AC:H/Au:N/C:C/I:N/A:N
Weakness (CWE)
CWE-255
EPSS score
0.9% (59th percentile)
In CISA KEV
No
In EU EUVD
Yes (EUVD-2013-4522)
Published
June 25, 2013
NVD last modified
June 16, 2026
Status
Modified

EU Vulnerability Database (EUVD)

This vulnerability is also tracked by ENISA as EUVD-2013-4522 in the EU Vulnerability Database. Last updated in EUVD on September 17, 2024.

View on the EU Vulnerability Database

Affected products

  • apple / mac os x
  • fortinet / forticlient
  • fortinet / forticlient lite
  • fortinet / forticlient ssl vpn
  • google / android
  • linux / linux kernel
  • microsoft / windows

References

Last updated September 17, 2026 · Source: NVD, CISA KEV, FIRST.org EPSS

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