{"cve":"CVE-2021-3786","nvd":{"published":"2021-11-12T22:15:08.110","modified":"2026-06-17T04:05:45.637","status":"Modified","description":"A potential vulnerability in the SMI callback function used in CSME configuration of some Lenovo Notebook and ThinkPad systems could be used to leak out data out of the SMRAM range.","cvss_v4":null,"cvss_v3":{"version":"3.1","vector":"CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:N","score":5.5},"cwes":["CWE-20"],"references":["https://support.lenovo.com/us/en/product_security/LEN-67440","https://support.lenovo.com/us/en/product_security/LEN-67440"],"products":["lenovo:ideapad_s940-14iwl_firmware","lenovo:ideapad_yoga_s940-14iwl_firmware","lenovo:thinkpad_10_firmware","lenovo:thinkpad_11e_3rd_gen_firmware","lenovo:thinkpad_11e_4th_gen_firmware","lenovo:thinkpad_11e_yoga_gen_6_firmware","lenovo:thinkpad_13_gen_2_firmware","lenovo:thinkpad_25_firmware","lenovo:thinkpad_e14_firmware","lenovo:thinkpad_e14_gen_2_firmware","lenovo:thinkpad_e14_gen_3_firmware","lenovo:thinkpad_e15_firmware","lenovo:thinkpad_e15_gen_2_firmware","lenovo:thinkpad_e15_gen_3_firmware","lenovo:thinkpad_e470_firmware","lenovo:thinkpad_e480_firmware","lenovo:thinkpad_e490_firmware","lenovo:thinkpad_e570_firmware","lenovo:thinkpad_e580_firmware","lenovo:thinkpad_e590_firmware","lenovo:thinkpad_helix_firmware","lenovo:thinkpad_l13_firmware","lenovo:thinkpad_l13_gen_2_firmware","lenovo:thinkpad_l13_yoga_firmware","lenovo:thinkpad_l13_yoga_gen_2_firmware","lenovo:thinkpad_l14_firmware","lenovo:thinkpad_l15_firmware","lenovo:thinkpad_l15_gen_2_firmware","lenovo:thinkpad_l380_firmware","lenovo:thinkpad_l380_yoga_firmware","lenovo:thinkpad_l390_firmware","lenovo:thinkpad_l390_yoga_firmware","lenovo:thinkpad_l460_firmware","lenovo:thinkpad_l470_firmware","lenovo:thinkpad_l480_firmware","lenovo:thinkpad_l490_firmware","lenovo:thinkpad_l560_firmware","lenovo:thinkpad_l570_firmware","lenovo:thinkpad_l580_firmware","lenovo:thinkpad_l590_firmware","lenovo:thinkpad_p14s_gen_1_firmware","lenovo:thinkpad_p14s_gen_2_firmware","lenovo:thinkpad_p15_gen_1_firmware","lenovo:thinkpad_p15s_gen_1_firmware","lenovo:thinkpad_p15s_gen_2_firmware","lenovo:thinkpad_p15v_gen_1_firmware","lenovo:thinkpad_p17_gen_1_firmware","lenovo:thinkpad_p1_firmware","lenovo:thinkpad_p1_gen_2_firmware","lenovo:thinkpad_p1_gen_3_firmware"],"source":"nvd","synced_at":"2026-10-19T21:24:39.218183596+00:00"},"epss":{"cve":"CVE-2021-3786","score":0.00233,"percentile":0.14247,"date":"2026-10-31"},"kev":null,"osv":[],"attribution":["This product uses the NVD API but is not endorsed or certified by the NVD.","EPSS scores: FIRST Exploit Prediction Scoring System, https://www.first.org/epss","Known exploited vulnerabilities: CISA Known Exploited Vulnerabilities Catalog, https://www.cisa.gov/known-exploited-vulnerabilities-catalog","Package advisories: OSV (https://osv.dev), from the GitHub Advisory Database, PyPA, Go, RustSec and other ecosystem databases, under CC-BY 4.0 or CC0","CVE records: the CVE Program's CVE List (https://www.cve.org), under its terms of use (https://www.cve.org/Legal/TermsOfUse). CVE is a registered trademark of The MITRE Corporation; this product is not affiliated with the CVE Program."]}