{"id":"CVE-2020-8336","url":"https://www.cyber-defence.io/tools/cve/CVE-2020-8336","generatedAt":"2026-10-27T23:28:40.624Z","title":"Lenovo implemented Intel CSME Anti-rollback ARB protections on some ThinkPad models to prevent roll back of CSME Firmware in flash.","description":"Lenovo implemented Intel CSME Anti-rollback ARB protections on some ThinkPad models to prevent roll back of CSME Firmware in flash.","published":"2020-06-09T20:15:23.000Z","lastModified":"2026-06-17T03:26:18.000Z","status":"Modified","sourceIdentifier":"psirt@lenovo.com","cvss":{"version":"3.1","score":6.8,"severity":"MEDIUM","vector":"CVSS:3.1/AV:P/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H"},"cwe":[],"affected":["lenovo/thinkpad e14 firmware","lenovo/thinkpad e15 firmware","lenovo/thinkpad r14 firmware","lenovo/thinkpad s3 gen 2 firmware","lenovo/thinkpad e490s firmware","lenovo/thinkpad s3 firmware","lenovo/thinkpad e490 firmware","lenovo/thinkpad e590 firmware","lenovo/thinkpad r490 firmware","lenovo/thinkpad r590 firmware","lenovo/thinkpad l13 1st gen firmware","lenovo/thinkpad l1415 gen 1 firmware","lenovo/thinkpad l390 yoga firmware","lenovo/thinkpad s2 yoga 4th gen firmware","lenovo/thinkpad l490 firmware","lenovo/thinkpad l590 firmware","lenovo/thinkpad p1 \\(20mx\\) firmware","lenovo/thinkpad p1 \\(20qx\\) firmware","lenovo/thinkpad p43s \\(20rx\\) firmware","lenovo/thinkpad p52 \\(20mx\\) firmware","lenovo/thinkpad p53 \\(20qx\\) firmware","lenovo/thinkpad p53s \\(20nx\\) firmware","lenovo/thinkpad p72 \\(20mx\\) firmware","lenovo/thinkpad p73 \\(20qx\\) firmware","lenovo/thinkpad t490 \\(20nx\\) firmware","lenovo/thinkpad t490 \\(20qx\\) firmware","lenovo/thinkpad t490 \\(20rx\\) firmware","lenovo/thinkpad t490s \\(20nx\\) firmware","lenovo/thinkpad t590 \\(20nx\\) firmware","lenovo/thinkpad x1 carbon \\(20qx\\) firmware","lenovo/thinkpad x1 carbon \\(20rx\\) firmware","lenovo/thinkpad x1 extreme \\(20mx\\) firmware","lenovo/thinkpad x1 extreme \\(20qx\\) firmware","lenovo/thinkpad x1 yoga \\(20qx\\) firmware","lenovo/thinkpad x1 yoga \\(20sx\\) firmware","lenovo/thinkpad x390 \\(20qx\\) firmware","lenovo/thinkpad x390 \\(20sx\\) firmware","lenovo/thinkpad x390 yoga firmware"],"epss":{"score":0.00297,"percentile":0.22163,"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 (0.30%). 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-2020-8336","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."}