{"id":"CVE-2021-36183","aliases":["EUVD-2021-22804","GHSA-vrc4-qvrw-2552"],"status":"published","title":"An improper authorization vulnerability [CWE-285] in FortiClient for Windows versions 7.0.1 and...","description":"An improper authorization vulnerability [CWE-285] in FortiClient for Windows versions 7.0.1 and below and 6.4.2 and below may allow a local unprivileged attacker to escalate their privileges to SYSTEM via the named pipe responsible for Forticlient updates.","severity":{"version":"3.1","score":7.4,"vector":"CVSS:3.1/AV:L/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:H/E:F/RL:X/RC:X","level":"high","assessor":"cna","from":"cve"},"epss":{"day":"2026-11-11","score":0.00327,"percentile":0.26143,"model":"v2026.06.15"},"facts":{"in_kev":false,"known_exploited":false,"public_exploit":false,"fix_available":false},"cwes":["CWE-863"],"published":"2021-11-02T18:41:28Z","modified":"2026-06-17T03:58:28Z","products":[{"vendor":"fortinet","product":"forticlient"},{"vendor":"fortinet","product":"fortinet forticlientwindows"}],"references":[{"url":"https://fortiguard.com/advisory/FG-IR-20-079","tags":["x_refsource_CONFIRM","x_transferred","Vendor Advisory"]},{"url":"https://nvd.nist.gov/vuln/detail/CVE-2021-36183"},{"url":"https://github.com/advisories/GHSA-vrc4-qvrw-2552"}],"sources":{"cve":[{"id":"CVE-2021-36183","description":"An improper authorization vulnerability [CWE-285] in FortiClient for Windows versions 7.0.1 and below and 6.4.2 and below may allow a local unprivileged attacker to escalate their privileges to SYSTEM via the named pipe responsible for Forticlient updates.","status":"published","published":"2021-11-02T18:41:28Z","modified":"2024-10-25T13:44:33.615Z","cvss":[{"version":"3.1","score":7.4,"vector":"CVSS:3.1/AV:L/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:H/E:F/RL:X/RC:X","level":"high","assessor":"cna"}],"updated_at":"2026-11-02T14:33:05.989686Z"}],"euvd":[{"id":"EUVD-2021-22804","description":"An improper authorization vulnerability [CWE-285] in FortiClient for Windows versions 7.0.1 and below and 6.4.2 and below may allow a local unprivileged attacker to escalate their privileges to SYSTEM via the named pipe responsible for Forticlient updates.","status":"published","published":"2021-11-02T18:41:28Z","modified":"2024-10-25T13:44:33Z","cvss":[{"version":"3.1","score":7.4,"vector":"CVSS:3.1/AV:L/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:H/E:F/RL:X/RC:X","level":"high"}],"updated_at":"2026-11-03T00:05:19.027476Z"}],"ghsa":[{"id":"GHSA-vrc4-qvrw-2552","title":"An improper authorization vulnerability [CWE-285] in FortiClient for Windows versions 7.0.1 and...","description":"An improper authorization vulnerability [CWE-285] in FortiClient for Windows versions 7.0.1 and below and 6.4.2 and below may allow a local unprivileged attacker to escalate their privileges to SYSTEM via the named pipe responsible for Forticlient updates.","status":"published","published":"2022-05-24T19:19:24Z","modified":"2023-01-30T05:03:15Z","cvss":[{"version":"3.1","score":7.8,"vector":"CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H","level":"high"}],"cwes":["CWE-863"],"updated_at":"2026-11-02T14:46:47.986344Z"}],"nvd":[{"id":"CVE-2021-36183","description":"An improper authorization vulnerability [CWE-285] in FortiClient for Windows versions 7.0.1 and below and 6.4.2 and below may allow a local unprivileged attacker to escalate their privileges to SYSTEM via the named pipe responsible for Forticlient updates.","status":"published","published":"2021-11-02T19:15:07.83Z","modified":"2026-06-17T03:58:28.887Z","cvss":[{"version":"3.1","score":7.4,"vector":"CVSS:3.1/AV:L/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:H","level":"high","assessor":"secondary"},{"version":"3.1","score":7.8,"vector":"CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H","level":"high","assessor":"primary"},{"version":"2.0","score":7.2,"vector":"AV:L/AC:L/Au:N/C:C/I:C/A:C","level":"high","assessor":"primary"}],"updated_at":"2026-11-02T14:07:00.549994Z"}]}}