{"id":"CVE-2020-15802","url":"https://www.cyber-defence.io/tools/cve/CVE-2020-15802","generatedAt":"2026-10-27T22:26:07.994Z","title":"Devices supporting Bluetooth before 5.1 may allow man-in-the-middle attacks, aka BLURtooth.","description":"Devices supporting Bluetooth before 5.1 may allow man-in-the-middle attacks, aka BLURtooth. Cross Transport Key Derivation in Bluetooth Core Specification v4.2 and v5.0 may permit an unauthenticated user to establish a bonding with one transport, either LE or BR/EDR, and replace a bonding already established on the opposing transport, BR/EDR or LE, potentially overwriting an authenticated key with an unauthenticated key, or a key with greater entropy with one with less.","published":"2020-09-11T14:15:11.000Z","lastModified":"2026-06-17T02:57:13.000Z","status":"Modified","sourceIdentifier":"cve@mitre.org","cvss":{"version":"3.1","score":5.9,"severity":"MEDIUM","vector":"CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:N/I:H/A:N"},"cwe":["CWE-287"],"affected":["bluetooth/bluetooth core specification"],"epss":{"score":0.07079,"percentile":0.94175,"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 (7.08%). Track it; it rarely justifies an emergency change on its own."},"changes":[],"references":[{"url":"https://gizmodo.com/bluetooth-unveils-its-latest-security-issue-with-no-se-1845013709","tags":["Third Party Advisory"],"source":"cve@mitre.org"},{"url":"https://www.bluetooth.com/learn-about-bluetooth/bluetooth-technology/bluetooth-security/blurtooth/","tags":["Vendor Advisory"],"source":"cve@mitre.org"},{"url":"https://www.kb.cert.org/vuls/id/589825","tags":["Third Party Advisory","US Government Resource"],"source":"cve@mitre.org"},{"url":"https://gizmodo.com/bluetooth-unveils-its-latest-security-issue-with-no-se-1845013709","tags":["Third Party Advisory"],"source":"af854a3a-2127-422b-91ae-364da2661108"},{"url":"https://www.bluetooth.com/learn-about-bluetooth/bluetooth-technology/bluetooth-security/blurtooth/","tags":["Vendor Advisory"],"source":"af854a3a-2127-422b-91ae-364da2661108"},{"url":"https://www.kb.cert.org/vuls/id/589825","tags":["Third Party Advisory","US Government Resource"],"source":"af854a3a-2127-422b-91ae-364da2661108"}],"sources":{"nvd":"https://nvd.nist.gov/vuln/detail/CVE-2020-15802","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."}