{"id":"CVE-2021-3972","aliases":["EUVD-2021-27177","GHSA-h8xq-rx7h-94j2"],"status":"published","title":"A potential vulnerability by a driver used during manufacturing process on some consumer Lenovo...","description":"A potential vulnerability by a driver used during manufacturing process on some consumer Lenovo Notebook devices' BIOS that was mistakenly not deactivated may allow an attacker with elevated privileges to modify secure boot setting by modifying an NVRAM variable.","severity":{"version":"3.1","score":6.7,"vector":"CVSS:3.1/AV:L/AC:L/PR:H/UI:N/S:U/C:H/I:H/A:H","level":"medium","assessor":"cna","from":"cve"},"epss":{"day":"2026-11-09","score":0.02858,"percentile":0.86844,"model":"v2026.06.15"},"facts":{"in_kev":false,"known_exploited":false,"public_exploit":true,"fix_available":false},"cwes":["CWE-489"],"published":"2022-04-22T20:30:40Z","modified":"2026-06-17T04:06:19Z","exploits":[{"source":"pocgithub","id":"killvxk/CVE-2021-3972","title":"killvxk/CVE-2021-3972","date":"2022-04-21","url":"https://github.com/killvxk/CVE-2021-3972"}],"products":[{"vendor":"lenovo","product":"ideapad_3-14ada05_firmware"},{"vendor":"lenovo","product":"ideapad_3-14ada6_firmware"},{"vendor":"lenovo","product":"ideapad_3-14alc6_firmware"},{"vendor":"lenovo","product":"ideapad_3-14are05_firmware"},{"vendor":"lenovo","product":"ideapad_3-14igl05_firmware"},{"vendor":"lenovo","product":"ideapad_3-14iil05_firmware"},{"vendor":"lenovo","product":"ideapad_3-14iml05_firmware"},{"vendor":"lenovo","product":"ideapad_3-14itl05_firmware"},{"vendor":"lenovo","product":"ideapad_3-14itl6_firmware"},{"vendor":"lenovo","product":"ideapad_3-15ada05_firmware"},{"vendor":"lenovo","product":"ideapad_3-15ada6_firmware"},{"vendor":"lenovo","product":"ideapad_3-15alc6_firmware"},{"vendor":"lenovo","product":"ideapad_3-15are05_firmware"},{"vendor":"lenovo","product":"ideapad_3-15igl05_firmware"},{"vendor":"lenovo","product":"ideapad_3-15iil05_firmware"},{"vendor":"lenovo","product":"ideapad_3-15iml05_firmware"},{"vendor":"lenovo","product":"ideapad_3-15itl05_firmware"},{"vendor":"lenovo","product":"ideapad_3-15itl6_firmware"},{"vendor":"lenovo","product":"ideapad_3-17ada05_firmware"},{"vendor":"lenovo","product":"ideapad_3-17ada6_firmware"},{"vendor":"lenovo","product":"ideapad_3-17alc6_firmware"},{"vendor":"lenovo","product":"ideapad_3-17are05_firmware"},{"vendor":"lenovo","product":"ideapad_3-17iil05_firmware"},{"vendor":"lenovo","product":"ideapad_3-17iml05_firmware"},{"vendor":"lenovo","product":"ideapad_3-17itl6_firmware"},{"vendor":"lenovo","product":"ideapad_5-15are05_firmware"},{"vendor":"lenovo","product":"ideapad_5-15iil05_firmware"},{"vendor":"lenovo","product":"ideapad_creator_5-15imh05_firmware"},{"vendor":"lenovo","product":"ideapad_gaming_3-15arh05_firmware"},{"vendor":"lenovo","product":"ideapad_gaming_3-15imh05_firmware"},{"vendor":"lenovo","product":"l3-15itl6_firmware"},{"vendor":"lenovo","product":"l340-15irh_firmware"},{"vendor":"lenovo","product":"l340-15iwl_firmware"},{"vendor":"lenovo","product":"l340-15iwl_touch_firmware"},{"vendor":"lenovo","product":"l340-17irh_firmware"},{"vendor":"lenovo","product":"l340-17iwl_firmware"},{"vendor":"lenovo","product":"l3_15iml05_firmware"},{"vendor":"lenovo","product":"legion_5-15ach6_firmware"},{"vendor":"lenovo","product":"legion_5-15ach6a_firmware"},{"vendor":"lenovo","product":"legion_5-15ach6h_firmware"},{"vendor":"lenovo","product":"legion_5-15imh6_firmware"},{"vendor":"lenovo","product":"legion_5-15ith6_firmware"},{"vendor":"lenovo","product":"legion_5-15ith6h_firmware"},{"vendor":"lenovo","product":"legion_5-17ach6_firmware"},{"vendor":"lenovo","product":"legion_5-17ach6h_firmware"},{"vendor":"lenovo","product":"legion_5-17ith6_firmware"},{"vendor":"lenovo","product":"legion_5-17ith6h_firmware"},{"vendor":"lenovo","product":"legion_5_pro-16ach6_firmware"},{"vendor":"lenovo","product":"legion_5_pro-16ach6h_firmware"},{"vendor":"lenovo","product":"legion_5_pro-16ith6_firmware"},{"vendor":"lenovo","product":"legion_5_pro-16ith6h_firmware"},{"vendor":"lenovo","product":"legion_7-16achg6_firmware"},{"vendor":"lenovo","product":"legion_7-16ithg6_firmware"},{"vendor":"lenovo","product":"legion_s7-15ach6_firmware"},{"vendor":"lenovo","product":"legion_y540-15irh-pg0_firmware"},{"vendor":"lenovo","product":"legion_y540-15irh_firmware"},{"vendor":"lenovo","product":"legion_y540-17irh-pg0_firmware"},{"vendor":"lenovo","product":"legion_y540-17irh_firmware"},{"vendor":"lenovo","product":"legion_y545-pg0_firmware"},{"vendor":"lenovo","product":"legion_y545_firmware"},{"vendor":"lenovo","product":"legion_y7000-2019-pg0_firmware"},{"vendor":"lenovo","product":"legion_y7000-2019_firmware"},{"vendor":"lenovo","product":"notebook bios"},{"vendor":"lenovo","product":"s145-14api_firmware"},{"vendor":"lenovo","product":"s145-14ast_firmware"},{"vendor":"lenovo","product":"s145-14igm_firmware"},{"vendor":"lenovo","product":"s145-14iil_firmware"},{"vendor":"lenovo","product":"s145-15api_firmware"},{"vendor":"lenovo","product":"s145-15ast_firmware"},{"vendor":"lenovo","product":"s145-15igm_firmware"},{"vendor":"lenovo","product":"s145-15iil_firmware"},{"vendor":"lenovo","product":"s14_g2_itl_firmware"},{"vendor":"lenovo","product":"s540-13api_firmware"},{"vendor":"lenovo","product":"s540-13iml_firmware"},{"vendor":"lenovo","product":"slim_7_pro-14ihu5_firmware"},{"vendor":"lenovo","product":"slim_9-14itl05_firmware"},{"vendor":"lenovo","product":"v14-ada_firmware"},{"vendor":"lenovo","product":"v14-are_firmware"},{"vendor":"lenovo","product":"v14-igl_firmware"},{"vendor":"lenovo","product":"v14-iil_firmware"},{"vendor":"lenovo","product":"v140-15iwl_firmware"},{"vendor":"lenovo","product":"v14_g1-iml_firmware"},{"vendor":"lenovo","product":"v14_g2-acl_firmware"},{"vendor":"lenovo","product":"v14_g2-itl_firmware"},{"vendor":"lenovo","product":"v15-ada_firmware"},{"vendor":"lenovo","product":"v15-igl_firmware"},{"vendor":"lenovo","product":"v15-iil_firmware"},{"vendor":"lenovo","product":"v15_g1-iml_firmware"},{"vendor":"lenovo","product":"v15_g2-alc_firmware"},{"vendor":"lenovo","product":"v15_g2-itl_firmware"},{"vendor":"lenovo","product":"v17-iil_firmware"},{"vendor":"lenovo","product":"v17_g2-itl_firmware"},{"vendor":"lenovo","product":"v340-17iwl_firmware"},{"vendor":"lenovo","product":"yoga_7-14acn6_firmware"},{"vendor":"lenovo","product":"yoga_c740-14iml_firmware"},{"vendor":"lenovo","product":"yoga_c740-15iml_firmware"},{"vendor":"lenovo","product":"yoga_c940-14iil_firmware"},{"vendor":"lenovo","product":"yoga_slim_7_pro-14ach5_d_firmware"},{"vendor":"lenovo","product":"yoga_slim_7_pro-14ach5_firmware"},{"vendor":"lenovo","product":"yoga_slim_7_pro-14ach5_o_firmware"},{"vendor":"lenovo","product":"yoga_slim_7_pro-14ach5_od_firmware"},{"vendor":"lenovo","product":"yoga_slim_7_pro-14arh5_firmware"},{"vendor":"lenovo","product":"yoga_slim_7_pro-14ihu5_firmware"},{"vendor":"lenovo","product":"yoga_slim_7_pro-14ihu5_o_firmware"},{"vendor":"lenovo","product":"yoga_slim_7_pro-14itl5_firmware"},{"vendor":"lenovo","product":"yoga_slim_9-14itl05_firmware"}],"references":[{"url":"https://support.lenovo.com/us/en/product_security/LEN-73440","tags":["x_refsource_MISC","x_transferred","Vendor Advisory"]},{"url":"https://nvd.nist.gov/vuln/detail/CVE-2021-3972"},{"url":"https://github.com/advisories/GHSA-h8xq-rx7h-94j2"}],"sources":{"cve":[{"id":"CVE-2021-3972","description":"A potential vulnerability by a driver used during manufacturing process on some consumer Lenovo Notebook devices' BIOS that was mistakenly not deactivated may allow an attacker with elevated privileges to modify secure boot setting by modifying an NVRAM variable.","status":"published","published":"2022-04-22T20:30:40Z","modified":"2024-08-03T17:09:09.723Z","cvss":[{"version":"3.1","score":6.7,"vector":"CVSS:3.1/AV:L/AC:L/PR:H/UI:N/S:U/C:H/I:H/A:H","level":"medium","assessor":"cna"}],"cwes":["CWE-489"],"updated_at":"2026-11-02T14:33:04.020035Z"}],"euvd":[{"id":"EUVD-2021-27177","description":"A potential vulnerability by a driver used during manufacturing process on some consumer Lenovo Notebook devices' BIOS that was mistakenly not deactivated may allow an attacker with elevated privileges to modify secure boot setting by modifying an NVRAM variable.","status":"published","published":"2022-04-22T20:30:40Z","modified":"2024-08-03T17:09:09Z","cvss":[{"version":"3.1","score":6.7,"vector":"CVSS:3.1/AV:L/AC:L/PR:H/UI:N/S:U/C:H/I:H/A:H","level":"medium"}],"updated_at":"2026-11-03T03:25:11.376657Z"}],"ghsa":[{"id":"GHSA-h8xq-rx7h-94j2","title":"A potential vulnerability by a driver used during manufacturing process on some consumer Lenovo...","description":"A potential vulnerability by a driver used during manufacturing process on some consumer Lenovo Notebook devices' BIOS that was mistakenly not deactivated may allow an attacker with elevated privileges to modify secure boot setting by modifying an NVRAM variable.","status":"published","published":"2022-04-23T00:03:00Z","modified":"2023-01-27T05:02:11Z","cvss":[{"version":"3.1","score":6.7,"vector":"CVSS:3.1/AV:L/AC:L/PR:H/UI:N/S:U/C:H/I:H/A:H","level":"medium"}],"updated_at":"2026-11-02T14:42:02.011098Z"}],"nvd":[{"id":"CVE-2021-3972","description":"A potential vulnerability by a driver used during manufacturing process on some consumer Lenovo Notebook devices' BIOS that was mistakenly not deactivated may allow an attacker with elevated privileges to modify secure boot setting by modifying an NVRAM variable.","status":"published","published":"2022-04-22T21:15:09.883Z","modified":"2026-06-17T04:06:19.02Z","cvss":[{"version":"3.1","score":6.7,"vector":"CVSS:3.1/AV:L/AC:L/PR:H/UI:N/S:U/C:H/I:H/A:H","level":"medium","assessor":"secondary"},{"version":"3.1","score":6.7,"vector":"CVSS:3.1/AV:L/AC:L/PR:H/UI:N/S:U/C:H/I:H/A:H","level":"medium","assessor":"primary"},{"version":"2.0","score":4.6,"vector":"AV:L/AC:L/Au:N/C:P/I:P/A:P","level":"medium","assessor":"primary"}],"cwes":["CWE-489"],"updated_at":"2026-11-02T14:07:06.029737Z"}]}}
