{"id":"CVE-2021-41028","aliases":["EUVD-2021-28181","GHSA-2p93-h9hw-wqjg"],"status":"published","title":"A combination of a use of hard-coded cryptographic key vulnerability [CWE-321] in FortiClientEMS...","description":"A combination of a use of hard-coded cryptographic key vulnerability [CWE-321] in FortiClientEMS 7.0.1 and below, 6.4.6 and below and an improper certificate validation vulnerability [CWE-297] in FortiClientWindows, FortiClientLinux and FortiClientMac 7.0.1 and below, 6.4.6 and below may allow an unauthenticated and network adjacent attacker to perform a man-in-the-middle attack between the EMS and the FCT via the telemetry protocol.","severity":{"version":"3.1","score":8.2,"vector":"CVSS:3.1/AV:A/AC:H/PR:N/UI:N/S:C/C:L/I:H/A:H/E:F/RL:U/RC:C","level":"high","assessor":"cna","from":"cve"},"epss":{"day":"2026-11-12","score":0.00229,"percentile":0.13803,"model":"v2026.06.15"},"facts":{"in_kev":false,"known_exploited":false,"public_exploit":false,"fix_available":false},"cwes":["CWE-295","CWE-798"],"published":"2021-12-16T18:13:38Z","modified":"2026-06-17T04:07:46Z","products":[{"vendor":"fortinet","product":"forticlient"},{"vendor":"fortinet","product":"forticlient_endpoint_management_server"},{"vendor":"fortinet","product":"fortinet forticlientems, forticlientwindows, forticlientlinux, forticlientmac"}],"references":[{"url":"https://fortiguard.com/advisory/FG-IR-21-075","tags":["x_refsource_CONFIRM","x_transferred","Vendor Advisory"]},{"url":"https://nvd.nist.gov/vuln/detail/CVE-2021-41028"},{"url":"https://github.com/advisories/GHSA-2p93-h9hw-wqjg"}],"sources":{"cve":[{"id":"CVE-2021-41028","description":"A combination of a use of hard-coded cryptographic key vulnerability [CWE-321] in FortiClientEMS 7.0.1 and below, 6.4.6 and below and an improper certificate validation vulnerability [CWE-297] in FortiClientWindows, FortiClientLinux and FortiClientMac 7.0.1 and below, 6.4.6 and below may allow an unauthenticated and network adjacent attacker to perform a man-in-the-middle attack between the EMS and the FCT via the telemetry protocol.","status":"published","published":"2021-12-16T18:13:38Z","modified":"2024-10-25T13:36:27.735Z","cvss":[{"version":"3.1","score":8.2,"vector":"CVSS:3.1/AV:A/AC:H/PR:N/UI:N/S:C/C:L/I:H/A:H/E:F/RL:U/RC:C","level":"high","assessor":"cna"}],"updated_at":"2026-11-02T14:32:59.430294Z"}],"euvd":[{"id":"EUVD-2021-28181","description":"A combination of a use of hard-coded cryptographic key vulnerability [CWE-321] in FortiClientEMS 7.0.1 and below, 6.4.6 and below and an improper certificate validation vulnerability [CWE-297] in FortiClientWindows, FortiClientLinux and FortiClientMac 7.0.1 and below, 6.4.6 and below may allow an unauthenticated and network adjacent attacker to perform a man-in-the-middle attack between the EMS and the FCT via the telemetry protocol.","status":"published","published":"2021-12-16T18:13:38Z","modified":"2024-10-25T13:36:27Z","cvss":[{"version":"3.1","score":8.2,"vector":"CVSS:3.1/AV:A/AC:H/PR:N/UI:N/S:C/C:L/I:H/A:H/E:F/RL:U/RC:C","level":"high"}],"updated_at":"2026-11-03T00:05:19.027476Z"}],"ghsa":[{"id":"GHSA-2p93-h9hw-wqjg","title":"A combination of a use of hard-coded cryptographic key vulnerability [CWE-321] in FortiClientEMS...","description":"A combination of a use of hard-coded cryptographic key vulnerability [CWE-321] in FortiClientEMS 7.0.1 and below, 6.4.6 and below and an improper certificate validation vulnerability [CWE-297] in FortiClientWindows, FortiClientLinux and FortiClientMac 7.0.1 and below, 6.4.6 and below may allow an unauthenticated and network adjacent attacker to perform a man-in-the-middle attack between the EMS and the FCT via the telemetry protocol.","status":"published","published":"2021-12-17T00:00:25Z","modified":"2023-02-01T05:07:10Z","cwes":["CWE-798"],"updated_at":"2026-11-02T14:50:29.480738Z"}],"nvd":[{"id":"CVE-2021-41028","description":"A combination of a use of hard-coded cryptographic key vulnerability [CWE-321] in FortiClientEMS 7.0.1 and below, 6.4.6 and below and an improper certificate validation vulnerability [CWE-297] in FortiClientWindows, FortiClientLinux and FortiClientMac 7.0.1 and below, 6.4.6 and below may allow an unauthenticated and network adjacent attacker to perform a man-in-the-middle attack between the EMS and the FCT via the telemetry protocol.","status":"published","published":"2021-12-16T19:15:08.13Z","modified":"2026-06-17T04:07:46.297Z","cvss":[{"version":"3.1","score":8.2,"vector":"CVSS:3.1/AV:A/AC:H/PR:N/UI:N/S:C/C:L/I:H/A:H","level":"high","assessor":"secondary"},{"version":"3.1","score":7.5,"vector":"CVSS:3.1/AV:A/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:H","level":"high","assessor":"primary"},{"version":"2.0","score":5.4,"vector":"AV:A/AC:M/Au:N/C:P/I:P/A:P","level":"medium","assessor":"primary"}],"cwes":["CWE-295","CWE-798"],"updated_at":"2026-11-02T14:07:02.566991Z"}]}}