{"cve":"CVE-2020-15509","nvd":{"published":"2020-07-07T14:15:11.380","modified":"2026-06-17T02:56:45.927","status":"Modified","description":"Nordic Semiconductor Android BLE Library through 2.2.1 and DFU Library through 1.10.4 for Android (as used by nRF Connect and other applications) can engage in unencrypted communication while showing the user that the communication is purportedly encrypted. The problem is in bond creation (e.g., internalCreateBond in BleManagerHandler).","cvss_v4":null,"cvss_v3":{"version":"3.1","vector":"CVSS:3.1/AV:A/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N","score":6.5},"cwes":["CWE-319"],"references":["https://github.com/NordicSemiconductor/Android-BLE-Library/commits/master","https://github.com/NordicSemiconductor/Android-DFU-Library/commits/release","https://secretdiary.ninja/index.php/2020/07/03/norec-attack-stripping-ble-encryption-from-nordicsemis-android-library-cve-2020-15509/","https://github.com/NordicSemiconductor/Android-BLE-Library/commits/master","https://github.com/NordicSemiconductor/Android-DFU-Library/commits/release"],"products":["nordicsemi:android_ble_library","nordicsemi:dfu_library"],"source":"nvd","synced_at":"2026-10-19T21:06:22.076270124+00:00"},"epss":{"cve":"CVE-2020-15509","score":0.0054,"percentile":0.45451,"date":"2026-10-31"},"kev":null,"osv":[],"attribution":["This product uses the NVD API but is not endorsed or certified by the NVD.","EPSS scores: FIRST Exploit Prediction Scoring System, https://www.first.org/epss","Known exploited vulnerabilities: CISA Known Exploited Vulnerabilities Catalog, https://www.cisa.gov/known-exploited-vulnerabilities-catalog","Package advisories: OSV (https://osv.dev), from the GitHub Advisory Database, PyPA, Go, RustSec and other ecosystem databases, under CC-BY 4.0 or CC0","CVE records: the CVE Program's CVE List (https://www.cve.org), under its terms of use (https://www.cve.org/Legal/TermsOfUse). CVE is a registered trademark of The MITRE Corporation; this product is not affiliated with the CVE Program."]}