{"id":"CVE-2021-36284","url":"https://www.cyber-defence.io/tools/cve/CVE-2021-36284","generatedAt":"2026-10-27T21:48:12.010Z","title":"Dell BIOS contains an Improper Restriction of Excessive Authentication Attempts vulnerability.","description":"Dell BIOS contains an Improper Restriction of Excessive Authentication Attempts vulnerability. A local authenticated malicious administrator could exploit this vulnerability to bypass excessive admin password attempt mitigations in order to carry out a brute force attack.","published":"2021-09-28T20:15:08.000Z","lastModified":"2026-06-17T03:58:36.000Z","status":"Modified","sourceIdentifier":"security_alert@emc.com","cvss":{"version":"3.1","score":4.4,"severity":"MEDIUM","vector":"CVSS:3.1/AV:L/AC:L/PR:H/UI:N/S:U/C:H/I:N/A:N"},"cwe":["CWE-307"],"affected":["dell/latitude 5310 2-in-1 firmware","dell/latitude 5320 firmware","dell/latitude 5400 firmware","dell/latitude 5411 firmware","dell/latitude 5500 firmware","dell/latitude 5520 firmware","dell/latitude 5511 firmware","dell/latitude 7212 rugged extreme tablet firmware","dell/latitude 7280 firmware","dell/latitude 7320 firmware","dell/latitude 7370 firmware","dell/latitude 7420 firmware","dell/latitude 7480 firmware","dell/latitude 9410 firmware","dell/latitude 9510 firmware","dell/latitude 9520 firmware","dell/optiplex 3080 firmware","dell/optiplex 3280 aio firmware","dell/optiplex 7480 aio firmware","dell/precision 3551 ffirmware","dell/precision 3640 tower firmware"],"epss":{"score":0.00232,"percentile":0.13925,"date":"2026-10-26","history":[]},"kev":{"listed":false},"exploits":{"count":0,"verified":false,"firstPublished":null,"source":"Exploit-DB (https://gitlab.com/exploit-database/exploitdb)","entries":[]},"verdict":{"level":"low","text":"Lower severity and a low EPSS score (0.23%). Track it; it rarely justifies an emergency change on its own."},"changes":[],"references":[{"url":"https://www.dell.com/support/kbdoc/000191495","tags":["Vendor Advisory"],"source":"security_alert@emc.com"},{"url":"https://www.dell.com/support/kbdoc/000191495","tags":["Vendor Advisory"],"source":"af854a3a-2127-422b-91ae-364da2661108"}],"sources":{"nvd":"https://nvd.nist.gov/vuln/detail/CVE-2021-36284","epss":"https://www.first.org/epss/","kev":"https://www.cisa.gov/known-exploited-vulnerabilities-catalog","exploitdb":"https://www.exploit-db.com/"},"licence":"CC BY 4.0 — link back to the CVE Explorer if you publish the results; upstream data remains subject to its own terms."}