{"schemaVersion":3,"id":"CVE-2020-35473","aliases":[],"status":"published","duplicateOf":null,"title":null,"description":"An information leakage vulnerability in the Bluetooth Low Energy advertisement scan response in Bluetooth Core Specifications 4.0 through 5.2, and extended scan response in Bluetooth Core Specifications 5.0 through 5.2, may be used to identify devices using Resolvable Private Addressing (RPA) by their response or non-response to specific scan requests from remote addresses. RPAs that have been associated with a specific remote device may also be used to identify a peer in the same manner by using its reaction to an active scan request. This has also been called an allowlist-based side channel.","dates":{"published":"2022-11-08T00:00:00.000Z","modified":"2025-05-01T17:28:19.414Z","reserved":null,"kevAdded":[],"kevDue":[]},"cvss":{"headline":{"score":4.3,"severity":"medium","version":"3.1","versionLabel":"v3.1","source":"CVE.org","vector":"CVSS:3.1/AV:A/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:N","computed":false,"selection":"backend-summary"},"metrics":[{"version":"3.1","versionLabel":"v3.1","source":"CVE.org","score":4.3,"severity":"medium","vector":"CVSS:3.1/AV:A/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:N","exploitability":null,"impact":null,"computed":false},{"version":"3.1","versionLabel":"v3.1","source":"NVD","score":4.3,"severity":"medium","vector":"CVSS:3.1/AV:A/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:N","exploitability":null,"impact":null,"computed":false}]},"epss":{"probability":0.00366,"percentile":0.29052,"severity":"low","asOf":"2026-10-20T00:00:00.000Z","change":{"pp":0.01299999999999999,"baselineDate":"2026-09-20T00:00:00.000Z","baselineScore":0.00353},"history":[{"date":"2026-09-14T00:00:00.000Z","score":0.00353,"percentile":null},{"date":"2026-09-15T00:00:00.000Z","score":0.00353,"percentile":null},{"date":"2026-09-16T00:00:00.000Z","score":0.00353,"percentile":null},{"date":"2026-09-17T00:00:00.000Z","score":0.00353,"percentile":null},{"date":"2026-09-18T00:00:00.000Z","score":0.00353,"percentile":null},{"date":"2026-09-19T00:00:00.000Z","score":0.00353,"percentile":null},{"date":"2026-09-20T00:00:00.000Z","score":0.00353,"percentile":null},{"date":"2026-09-21T00:00:00.000Z","score":0.00353,"percentile":null},{"date":"2026-09-22T00:00:00.000Z","score":0.00353,"percentile":null},{"date":"2026-09-23T00:00:00.000Z","score":0.00353,"percentile":null},{"date":"2026-09-24T00:00:00.000Z","score":0.00353,"percentile":null},{"date":"2026-09-25T00:00:00.000Z","score":0.00353,"percentile":null},{"date":"2026-09-26T00:00:00.000Z","score":0.00353,"percentile":null},{"date":"2026-09-27T00:00:00.000Z","score":0.00353,"percentile":null},{"date":"2026-09-28T00:00:00.000Z","score":0.00353,"percentile":null},{"date":"2026-09-29T00:00:00.000Z","score":0.00353,"percentile":null},{"date":"2026-09-30T00:00:00.000Z","score":0.00353,"percentile":null},{"date":"2026-10-01T00:00:00.000Z","score":0.00353,"percentile":null},{"date":"2026-10-02T00:00:00.000Z","score":0.00353,"percentile":null},{"date":"2026-10-03T00:00:00.000Z","score":0.00353,"percentile":null},{"date":"2026-10-04T00:00:00.000Z","score":0.00353,"percentile":null},{"date":"2026-10-05T00:00:00.000Z","score":0.00353,"percentile":null},{"date":"2026-10-06T00:00:00.000Z","score":0.00353,"percentile":null},{"date":"2026-10-07T00:00:00.000Z","score":0.00353,"percentile":null},{"date":"2026-10-08T00:00:00.000Z","score":0.00353,"percentile":null},{"date":"2026-10-09T00:00:00.000Z","score":0.00353,"percentile":null},{"date":"2026-10-10T00:00:00.000Z","score":0.00353,"percentile":null},{"date":"2026-10-11T00:00:00.000Z","score":0.00353,"percentile":null},{"date":"2026-10-12T00:00:00.000Z","score":0.00353,"percentile":null},{"date":"2026-10-13T00:00:00.000Z","score":0.00353,"percentile":null},{"date":"2026-10-14T00:00:00.000Z","score":0.00366,"percentile":null},{"date":"2026-10-15T00:00:00.000Z","score":0.00366,"percentile":null},{"date":"2026-10-16T00:00:00.000Z","score":0.00366,"percentile":null},{"date":"2026-10-17T00:00:00.000Z","score":0.00366,"percentile":null},{"date":"2026-10-18T00:00:00.000Z","score":0.00366,"percentile":null},{"date":"2026-10-19T00:00:00.000Z","score":0.00366,"percentile":null},{"date":"2026-10-20T00:00:00.000Z","score":0.00366,"percentile":0.29052}],"last30":[{"date":"2026-09-20T00:00:00.000Z","score":0.00353,"percentile":null},{"date":"2026-09-21T00:00:00.000Z","score":0.00353,"percentile":null},{"date":"2026-09-22T00:00:00.000Z","score":0.00353,"percentile":null},{"date":"2026-09-23T00:00:00.000Z","score":0.00353,"percentile":null},{"date":"2026-09-24T00:00:00.000Z","score":0.00353,"percentile":null},{"date":"2026-09-25T00:00:00.000Z","score":0.00353,"percentile":null},{"date":"2026-09-26T00:00:00.000Z","score":0.00353,"percentile":null},{"date":"2026-09-27T00:00:00.000Z","score":0.00353,"percentile":null},{"date":"2026-09-28T00:00:00.000Z","score":0.00353,"percentile":null},{"date":"2026-09-29T00:00:00.000Z","score":0.00353,"percentile":null},{"date":"2026-09-30T00:00:00.000Z","score":0.00353,"percentile":null},{"date":"2026-10-01T00:00:00.000Z","score":0.00353,"percentile":null},{"date":"2026-10-02T00:00:00.000Z","score":0.00353,"percentile":null},{"date":"2026-10-03T00:00:00.000Z","score":0.00353,"percentile":null},{"date":"2026-10-04T00:00:00.000Z","score":0.00353,"percentile":null},{"date":"2026-10-05T00:00:00.000Z","score":0.00353,"percentile":null},{"date":"2026-10-06T00:00:00.000Z","score":0.00353,"percentile":null},{"date":"2026-10-07T00:00:00.000Z","score":0.00353,"percentile":null},{"date":"2026-10-08T00:00:00.000Z","score":0.00353,"percentile":null},{"date":"2026-10-09T00:00:00.000Z","score":0.00353,"percentile":null},{"date":"2026-10-10T00:00:00.000Z","score":0.00353,"percentile":null},{"date":"2026-10-11T00:00:00.000Z","score":0.00353,"percentile":null},{"date":"2026-10-12T00:00:00.000Z","score":0.00353,"percentile":null},{"date":"2026-10-13T00:00:00.000Z","score":0.00353,"percentile":null},{"date":"2026-10-14T00:00:00.000Z","score":0.00366,"percentile":null},{"date":"2026-10-15T00:00:00.000Z","score":0.00366,"percentile":null},{"date":"2026-10-16T00:00:00.000Z","score":0.00366,"percentile":null},{"date":"2026-10-17T00:00:00.000Z","score":0.00366,"percentile":null},{"date":"2026-10-18T00:00:00.000Z","score":0.00366,"percentile":null},{"date":"2026-10-19T00:00:00.000Z","score":0.00366,"percentile":null},{"date":"2026-10-20T00:00:00.000Z","score":0.00366,"percentile":0.29052}]},"kev":{"state":"not-listed","entries":[],"listedCount":0,"totalCatalogs":3,"catalogs":[{"source":"cisa","label":"CISA","listed":false,"entry":null},{"source":"enisa","label":"ENISA","listed":false,"entry":null},{"source":"circl","label":"CIRCL","listed":false,"entry":null}]},"ransomware":{"state":"none-recorded","sources":[]},"exploits":[],"exploitCount":0,"weaknesses":[{"id":"CWE-203","name":"Observable Discrepancy","description":"The product behaves differently or sends different responses under different circumstances in a way that is observable to an unauthorized actor.","type":"weakness","status":"Incomplete","abstraction":"Base","likelihoodOfExploit":null,"url":"https://cwe.mitre.org/data/definitions/203.html"},{"id":"CWE-294","name":"Authentication Bypass by Capture-replay","description":"A capture-replay flaw exists when the design of the product makes it possible for a malicious user to sniff network traffic and bypass authentication by replaying it to the server in question to the same effect as the original message (or with minor changes).","type":"weakness","status":"Incomplete","abstraction":"Base","likelihoodOfExploit":"High","url":"https://cwe.mitre.org/data/definitions/294.html"}],"affected":[{"vendor":"bluetooth","product":"bluetooth_core_specification","name":"bluetooth core specification","label":"bluetooth_core_specification","ecosystem":null,"cpePart":"a","purl":null,"purlType":null,"versions":[{"text":"≥ 4.0, ≤ 5.2","noFixRecorded":false,"fixedIn":null}],"versionsText":"≥ 4.0, ≤ 5.2","eol":null,"hubHref":"/vendor/bluetooth/bluetooth_core_specification"}],"affectedCount":1,"eol":{"hasEol":false,"count":0},"references":[{"url":"https://dl.acm.org/doi/10.1145/3548606.3559372","label":"dl.acm.org/doi/10.1145/3548606.3559372","hostname":"dl.acm.org","tags":["Technical Description","Third Party Advisory"]},{"url":"https://www.sigsac.org/ccs/CCS2022/proceedings/ccs-proceedings.html","label":"www.sigsac.org/ccs/CCS2022/proceedings/ccs-proceedings.html","hostname":"www.sigsac.org","tags":["Technical Description","Third Party Advisory"]}],"lineage":{"upstream":[],"downstream":[],"duplicates":[],"related":[]},"timeline":[{"kind":"published","date":"2022-11-08T00:00:00.000Z","label":"Published","detail":"Vulnerability first disclosed.","source":null},{"kind":"modified","date":"2025-05-01T17:28:19.414Z","label":"Last modified","detail":"Vulnerability information updated.","source":null}],"risk":{"score":17,"level":"low","profile":"Default","thresholds":{"critical":75,"high":50,"medium":25,"low":10}},"meta":{"dataAsOf":"2026-10-21T10:38:18.972Z","stale":false,"partial":false}}