{"id":"CVE-2013-4669","aliases":["EUVD-2013-4522","GHSA-hrj7-5rgf-5c7r"],"status":"published","title":"FortiClient before 4.3.5.472 on Windows, before 4.0.3.134 on Mac OS X, and before 4.0 on Android;...","description":"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.","severity":{"version":"2.0","score":5.4,"vector":"AV:N/AC:H/Au:N/C:C/I:N/A:N","level":"medium","assessor":"primary","from":"nvd"},"epss":{"day":"2026-11-07","score":0.00868,"percentile":0.58965,"model":"v2026.06.15"},"facts":{"in_kev":false,"known_exploited":false,"public_exploit":false,"fix_available":false},"cwes":["CWE-255","CWE-310"],"published":"2013-06-25T14:00:00Z","modified":"2026-06-16T23:57:41Z","products":[{"vendor":"fortinet","product":"forticlient"},{"vendor":"fortinet","product":"forticlient_lite"},{"vendor":"fortinet","product":"forticlient_ssl_vpn"}],"references":[{"url":"http://www.fortiguard.com/advisory/Potential-Man-In-The-Middle-Vulnerability-in-FortiClient-VPN/","tags":["x_refsource_CONFIRM","x_transferred"]},{"url":"http://objectif-securite.ch/forticlient_bulletin.php","tags":["x_refsource_MISC","x_transferred"]},{"url":"http://www.securityfocus.com/bid/59604","tags":["vdb-entry","x_refsource_BID","x_transferred"]},{"url":"http://archives.neohapsis.com/archives/fulldisclosure/2013-05/0001.html","tags":["mailing-list","x_refsource_FULLDISC","x_transferred"]},{"url":"https://nvd.nist.gov/vuln/detail/CVE-2013-4669"},{"url":"http://www.fortiguard.com/advisory/Potential-Man-In-The-Middle-Vulnerability-in-FortiClient-VPN"},{"url":"https://github.com/advisories/GHSA-hrj7-5rgf-5c7r"}],"sources":{"cve":[{"id":"CVE-2013-4669","description":"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.","status":"published","published":"2013-06-25T14:00:00Z","modified":"2024-09-17T00:31:09.22Z","updated_at":"2026-11-02T14:34:57.869657Z"}],"euvd":[{"id":"EUVD-2013-4522","description":"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.","status":"published","published":"2013-06-25T14:00:00Z","modified":"2024-09-17T00:31:09Z","updated_at":"2026-11-03T00:28:58.42254Z"}],"ghsa":[{"id":"GHSA-hrj7-5rgf-5c7r","title":"FortiClient before 4.3.5.472 on Windows, before 4.0.3.134 on Mac OS X, and before 4.0 on Android;...","description":"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.","status":"published","published":"2022-05-17T04:03:06Z","modified":"2025-04-11T04:11:25Z","updated_at":"2026-11-02T15:01:14.028836Z"}],"nvd":[{"id":"CVE-2013-4669","description":"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.","status":"published","published":"2013-06-25T14:38:18.287Z","modified":"2026-06-16T23:57:41.523Z","cvss":[{"version":"2.0","score":5.4,"vector":"AV:N/AC:H/Au:N/C:C/I:N/A:N","level":"medium","assessor":"primary"}],"cwes":["CWE-255","CWE-310"],"updated_at":"2026-11-02T14:02:29.210317Z"}]}}