{"id":"CVE-2021-3969","aliases":["EUVD-2021-27174","GHSA-v6hw-6vc6-j7hx"],"status":"published","title":"A Time of Check Time of Use (TOCTOU) vulnerability was reported in IMController, a software...","description":"A Time of Check Time of Use (TOCTOU) vulnerability was reported in IMController, a software component of Lenovo System Interface Foundation, prior to version 1.1.20.3that could allow a local attacker to elevate privileges.","severity":{"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":"cna","from":"cve"},"epss":{"day":"2026-11-09","score":0.01925,"percentile":0.80094,"model":"v2026.06.15"},"facts":{"in_kev":false,"known_exploited":false,"public_exploit":false,"fix_available":false},"cwes":["CWE-367"],"published":"2022-05-18T16:10:25Z","modified":"2026-06-17T04:06:18Z","products":[{"vendor":"lenovo","product":"imcontroller"},{"vendor":"lenovo","product":"system_interface_foundation"}],"references":[{"url":"https://support.lenovo.com/us/en/product_security/LEN-75210","tags":["x_refsource_MISC","x_transferred","Patch","Vendor Advisory"]},{"url":"https://nvd.nist.gov/vuln/detail/CVE-2021-3969"},{"url":"https://github.com/advisories/GHSA-v6hw-6vc6-j7hx"}],"sources":{"cve":[{"id":"CVE-2021-3969","description":"A Time of Check Time of Use (TOCTOU) vulnerability was reported in IMController, a software component of Lenovo System Interface Foundation, prior to version 1.1.20.3that could allow a local attacker to elevate privileges.","status":"published","published":"2022-05-18T16:10:25Z","modified":"2024-08-03T17:09:09.613Z","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","assessor":"cna"}],"cwes":["CWE-367"],"updated_at":"2026-11-02T14:33:04.020035Z"}],"euvd":[{"id":"EUVD-2021-27174","description":"A Time of Check Time of Use (TOCTOU) vulnerability was reported in IMController, a software component of Lenovo System Interface Foundation, prior to version 1.1.20.3that could allow a local attacker to elevate privileges.","status":"published","published":"2022-05-18T16:10:25Z","modified":"2024-08-03T17:09:09Z","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"}],"updated_at":"2026-11-03T03:25:11.376657Z"}],"ghsa":[{"id":"GHSA-v6hw-6vc6-j7hx","title":"A Time of Check Time of Use (TOCTOU) vulnerability was reported in IMController, a software...","description":"A Time of Check Time of Use (TOCTOU) vulnerability was reported in IMController, a software component of Lenovo System Interface Foundation, prior to version 1.1.20.3that could allow a local attacker to elevate privileges.","status":"published","published":"2022-05-19T00:00:25Z","modified":"2023-01-28T05:05:06Z","cvss":[{"version":"3.1","score":7,"vector":"CVSS:3.1/AV:L/AC:H/PR:L/UI:N/S:U/C:H/I:H/A:H","level":"high"}],"cwes":["CWE-367"],"updated_at":"2026-11-02T14:44:18.061425Z"}],"nvd":[{"id":"CVE-2021-3969","description":"A Time of Check Time of Use (TOCTOU) vulnerability was reported in IMController, a software component of Lenovo System Interface Foundation, prior to version 1.1.20.3that could allow a local attacker to elevate privileges.","status":"published","published":"2022-05-18T16:15:08.127Z","modified":"2026-06-17T04:06:18.553Z","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","assessor":"secondary"},{"version":"3.1","score":7,"vector":"CVSS:3.1/AV:L/AC:H/PR:L/UI:N/S:U/C:H/I:H/A:H","level":"high","assessor":"primary"},{"version":"2.0","score":4.4,"vector":"AV:L/AC:M/Au:N/C:P/I:P/A:P","level":"medium","assessor":"primary"}],"cwes":["CWE-367"],"updated_at":"2026-11-02T14:07:06.029737Z"}]}}