{"id":"CVE-2021-3843","aliases":["EUVD-2021-27086","GHSA-jv7h-3pw9-7qjw"],"status":"published","title":"A potential vulnerability in the SMI function to access EEPROM in some ThinkPad models may allow...","description":"A potential vulnerability in the SMI function to access EEPROM in some ThinkPad models may allow an attacker with local access and elevated privileges to execute arbitrary code.","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":0.00279,"percentile":0.20477,"model":"v2026.06.15"},"facts":{"in_kev":false,"known_exploited":false,"public_exploit":false,"fix_available":false},"cwes":["CWE-20"],"published":"2021-11-12T22:05:56Z","modified":"2026-06-17T04:05:52Z","products":[{"vendor":"lenovo","product":"thinkpad bios"},{"vendor":"lenovo","product":"thinkpad_11e_3rd_gen_firmware"},{"vendor":"lenovo","product":"thinkpad_11e_4th_gen_celeron_firmware"},{"vendor":"lenovo","product":"thinkpad_11e_4th_gen_i3_firmware"},{"vendor":"lenovo","product":"thinkpad_11e_4th_gen_i5_firmware"},{"vendor":"lenovo","product":"thinkpad_11e_4th_gen_i7_firmware"},{"vendor":"lenovo","product":"thinkpad_11e_5th_gen_firmware"},{"vendor":"lenovo","product":"thinkpad_11e_yoga_gen_6_firmware"},{"vendor":"lenovo","product":"thinkpad_13_gen_2_firmware"},{"vendor":"lenovo","product":"thinkpad_l13_firmware"},{"vendor":"lenovo","product":"thinkpad_l13_gen_2_firmware"},{"vendor":"lenovo","product":"thinkpad_l13_yoga_firmware"},{"vendor":"lenovo","product":"thinkpad_l13_yoga_gen_2_firmware"},{"vendor":"lenovo","product":"thinkpad_l14_firmware"},{"vendor":"lenovo","product":"thinkpad_l14_gen_1_firmware"},{"vendor":"lenovo","product":"thinkpad_l15_firmware"},{"vendor":"lenovo","product":"thinkpad_l15_gen_1_firmware"},{"vendor":"lenovo","product":"thinkpad_l380_firmware"},{"vendor":"lenovo","product":"thinkpad_l380_yoga_firmware"},{"vendor":"lenovo","product":"thinkpad_l390_firmware"},{"vendor":"lenovo","product":"thinkpad_l390_yoga_firmware"},{"vendor":"lenovo","product":"thinkpad_s2_gen_6_firmware"},{"vendor":"lenovo","product":"thinkpad_s2_yoga_gen_6_firmware"},{"vendor":"lenovo","product":"thinkpad_s5_2nd_gen_firmware"},{"vendor":"lenovo","product":"thinkpad_t460_firmware"},{"vendor":"lenovo","product":"thinkpad_x12_detachable_gen_1_firmware"},{"vendor":"lenovo","product":"thinkpad_x1_fold_gen_1_firmware"},{"vendor":"lenovo","product":"thinkpad_x260_firmware"},{"vendor":"lenovo","product":"thinkpad_x380_yoga_firmware"},{"vendor":"lenovo","product":"thinkpad_x390_yoga_firmware"}],"references":[{"url":"https://support.lenovo.com/us/en/product_security/LEN-72619","tags":["x_refsource_MISC","x_transferred","Vendor Advisory"]},{"url":"https://nvd.nist.gov/vuln/detail/CVE-2021-3843"},{"url":"https://github.com/advisories/GHSA-jv7h-3pw9-7qjw"}],"sources":{"cve":[{"id":"CVE-2021-3843","description":"A potential vulnerability in the SMI function to access EEPROM in some ThinkPad models may allow an attacker with local access and elevated privileges to execute arbitrary code.","status":"published","published":"2021-11-12T22:05:56Z","modified":"2024-08-03T17:09:09.58Z","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-20"],"updated_at":"2026-11-02T14:33:04.020035Z"}],"euvd":[{"id":"EUVD-2021-27086","description":"A potential vulnerability in the SMI function to access EEPROM in some ThinkPad models may allow an attacker with local access and elevated privileges to execute arbitrary code.","status":"published","published":"2021-11-12T22:05:56Z","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-jv7h-3pw9-7qjw","title":"A potential vulnerability in the SMI function to access EEPROM in some ThinkPad models may allow...","description":"A potential vulnerability in the SMI function to access EEPROM in some ThinkPad models may allow an attacker with local access and elevated privileges to execute arbitrary code.","status":"published","published":"2022-05-24T19:20:28Z","modified":"2023-01-30T05:03:49Z","updated_at":"2026-11-02T14:46:54.738868Z"}],"nvd":[{"id":"CVE-2021-3843","description":"A potential vulnerability in the SMI function to access EEPROM in some ThinkPad models may allow an attacker with local access and elevated privileges to execute arbitrary code.","status":"published","published":"2021-11-12T22:15:08.58Z","modified":"2026-06-17T04:05:52.743Z","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":7.2,"vector":"AV:L/AC:L/Au:N/C:C/I:C/A:C","level":"high","assessor":"primary"}],"cwes":["CWE-20"],"updated_at":"2026-11-02T14:07:00.984108Z"}]}}
