{"cve":"CVE-2021-36283","nvd":{"published":"2021-09-28T20:15:07.567","modified":"2026-06-17T03:58:35.477","status":"Modified","description":"Dell BIOS contains an improper input validation vulnerability. A local authenticated malicious user may potentially exploit this vulnerability by using an SMI to gain arbitrary code execution in SMRAM.","cvss_v4":null,"cvss_v3":{"version":"3.1","vector":"CVSS:3.1/AV:L/AC:L/PR:H/UI:N/S:U/C:H/I:H/A:H","score":6.7},"cwes":["CWE-20"],"references":["https://www.dell.com/support/kbdoc/000191495/","https://www.dell.com/support/kbdoc/000191495/"],"products":["dell:chengming_3990_firmware","dell:chengming_3991_firmware","dell:g3_15_3500_firmware","dell:g3_15_3590_firmware","dell:g3_15_5500_firmware","dell:inspiron_3493_firmware","dell:inspiron_3501_firmware","dell:inspiron_3593_firmware","dell:inspiron_3793_firmware","dell:inspiron_3880_firmware","dell:inspiron_3881_firmware","dell:inspiron_5400_2-in-1_firmware","dell:inspiron_5490_firmware","dell:inspiron_5493_firmware","dell:inspiron_5498_firmware","dell:inspiron_5590_firmware","dell:inspiron_5593_firmware","dell:inspiron_5598_firmware","dell:inspiron_7391_2-in-1_firmware","dell:inspiron_7500_2-in-1_silver_firmware","dell:inspiron_7500_firmware","dell:inspiron_7501_firmware","dell:inspiron_7590_firmware","dell:inspiron_7591_firmware","dell:latitude_3310_2-in-1_firmware","dell:latitude_3310_firmware","dell:latitude_5300_2-in-1_firmware","dell:latitude_5300_firmware","dell:latitude_5310_2_in_1_firmware","dell:latitude_5310_firmware","dell:latitude_5400_firmware","dell:latitude_5401_firmware","dell:latitude_5410_firmware","dell:latitude_5411_firmware","dell:latitude_5500_firmware","dell:latitude_5511_firmware","dell:latitude_7200_2_in_1_firmware","dell:latitude_7210_2_in_1_firmware","dell:latitude_7220ex_rugged_extreme_tablet_firmware","dell:latitude_7300_firmware","dell:latitude_7310_firmware","dell:latitude_7400_2-in-1_firmware","dell:latitude_7400_firmware","dell:latitude_7410_firmware","dell:latitude_9410_firmware","dell:latitude_9510_firmware","dell:optiplex_3080_firmware","dell:optiplex_3280_aio_firmware","dell:optiplex_5080_firmware","dell:optiplex_5480_aio_firmware"],"source":"nvd","synced_at":"2026-10-19T21:23:41.316049955+00:00"},"epss":{"cve":"CVE-2021-36283","score":0.00249,"percentile":0.16313,"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."]}