{"id":"CVE-2020-8321","url":"https://www.cyber-defence.io/tools/cve/CVE-2020-8321","generatedAt":"2026-10-27T20:19:15.763Z","title":"A potential vulnerability in the SMI callback function used in the System Lock Preinstallation driver in some Lenovo Notebook and ThinkStation models may allow arbitrary code execution.","description":"A potential vulnerability in the SMI callback function used in the System Lock Preinstallation driver in some Lenovo Notebook and ThinkStation models may allow arbitrary code execution.","published":"2020-06-09T20:15:22.000Z","lastModified":"2026-06-17T03:26:16.000Z","status":"Modified","sourceIdentifier":"psirt@lenovo.com","cvss":{"version":"3.1","score":6.7,"severity":"MEDIUM","vector":"CVSS:3.1/AV:L/AC:L/PR:H/UI:N/S:U/C:H/I:H/A:H"},"cwe":[],"affected":["lenovo/130-14ast firmware","lenovo/130-14ikb firmware","lenovo/130-15ast firmware","lenovo/130-15ikb firmware","lenovo/320c-15ikb firmware","lenovo/330-14igm firmware","lenovo/330-14ikb firmware","lenovo/330-14ikbr firmware","lenovo/330-15arr firmware","lenovo/330-15arr touch firmware","lenovo/330-15ich firmware","lenovo/330-15igm firmware","lenovo/330-15ikb firmware","lenovo/330-15ikbr firmware","lenovo/330-15ikbr touch firmware","lenovo/330-17ich firmware","lenovo/330-17ikb firmware","lenovo/330-17ikbr firmware","lenovo/330c-14ikb firmware","lenovo/330c-15ikb firmware","lenovo/330c-15ikbr firmware","lenovo/340c-15igm firmware","lenovo/340c-15ikb firmware","lenovo/340c-15iwl firmware","lenovo/530s-14iwl firmware","lenovo/530s-15iwl firmware","lenovo/530s-14arr firmware","lenovo/530s-14ikb firmware","lenovo/530s-15ikb firmware","lenovo/720s-13arr firmware","lenovo/720s-14ikbr firmware","lenovo/c340-14api firmware","lenovo/c340-14iml firmware","lenovo/c340-14iwl firmware","lenovo/c340-15iil firmware","lenovo/c340-15iml firmware","lenovo/c340-15iwl firmware","lenovo/d330-10igm firmware","lenovo/d335-10igm firmware","lenovo/e4-14arr firmware","lenovo/flex 6-14arr firmware","lenovo/flex 6-14ikb firmware","lenovo/flex-14iwl firmware","lenovo/flex-15iwl firmware","lenovo/ideapad 3 14 firmware","lenovo/ideapad 3 15 firmware","lenovo/ideapad 3 17iml05 firmware","lenovo/ideapad 3 15iil05 firmware","lenovo/ideapad 3 14iil05 firmware","lenovo/ideapad 5 15iil05 firmware","lenovo/k43c-80 firmware","lenovo/l3 15iml05 firmware","lenovo/l340-15api firmware","lenovo/l340-15api touch firmware","lenovo/l340-15irh firmware","lenovo/l340-15iwl touch firmware","lenovo/l340-17api firmware","lenovo/l340-17irh firmware","lenovo/l340-17iwl firmware","lenovo/legion y530-15ich firmware"],"epss":{"score":0.00345,"percentile":0.27837,"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 (0.34%). Track it; it rarely justifies an emergency change on its own."},"changes":[],"references":[{"url":"https://support.lenovo.com/us/en/product_security/LEN-30042","tags":["Vendor Advisory"],"source":"psirt@lenovo.com"},{"url":"https://support.lenovo.com/us/en/product_security/LEN-30042","tags":["Vendor Advisory"],"source":"af854a3a-2127-422b-91ae-364da2661108"}],"sources":{"nvd":"https://nvd.nist.gov/vuln/detail/CVE-2020-8321","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."}