{"cve":"CVE-2019-9506","nvd":{"published":"2019-08-14T17:15:11.597","modified":"2026-06-17T02:43:50.397","status":"Modified","description":"The Bluetooth BR/EDR specification up to and including version 5.1 permits sufficiently low encryption key length and does not prevent an attacker from influencing the key length negotiation. This allows practical brute-force attacks (aka \"KNOB\") that can decrypt traffic and inject arbitrary ciphertext without the victim noticing.","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:H/A:N","score":8.1},"cwes":["CWE-327","CWE-310"],"references":["http://lists.opensuse.org/opensuse-security-announce/2019-10/msg00036.html","http://lists.opensuse.org/opensuse-security-announce/2019-10/msg00037.html","http://seclists.org/fulldisclosure/2019/Aug/11","http://seclists.org/fulldisclosure/2019/Aug/13","http://seclists.org/fulldisclosure/2019/Aug/14"],"products":["apple:iphone_os","apple:mac_os_x","apple:tvos","apple:watchos","canonical:ubuntu_linux","debian:debian_linux","google:android","huawei:alp-al00b_firmware","huawei:ares-al00b_firmware","huawei:ares-al10d_firmware","huawei:ares-tl00c_firmware","huawei:asoka-al00ax_firmware","huawei:atomu-l33_firmware","huawei:atomu-l41_firmware","huawei:atomu-l42_firmware","huawei:barca-al00_firmware","huawei:berkeley-al20_firmware","huawei:berkeley-l09_firmware","huawei:berkeley-tl10_firmware","huawei:bla-al00b_firmware","huawei:bla-l29c_firmware","huawei:bla-tl00b_firmware","huawei:cairogo-l22_firmware","huawei:charlotte-l29c_firmware","huawei:columbia-al10b_firmware","huawei:columbia-al10i_firmware","huawei:columbia-l29d_firmware","huawei:columbia-tl00d_firmware","huawei:cornell-al00a_firmware","huawei:cornell-al00i_firmware","huawei:cornell-al00ind_firmware","huawei:cornell-al10ind_firmware","huawei:cornell-l29a_firmware","huawei:cornell-tl10b_firmware","huawei:dubai-al00a_firmware","huawei:dura-al00a_firmware","huawei:dura-tl00a_firmware","huawei:emily-l29c_firmware","huawei:ever-l29b_firmware","huawei:figo-l23_firmware","huawei:figo-l31_firmware","huawei:figo-tl10b_firmware","huawei:florida-al20b_firmware","huawei:florida-l21_firmware","huawei:florida-l22_firmware","huawei:florida-l23_firmware","huawei:florida-tl10b_firmware","huawei:harry-al00c_firmware","huawei:harry-al10b_firmware","huawei:harry-tl00c_firmware"],"source":"nvd","synced_at":"2026-10-19T20:58:11.797917892+00:00"},"epss":{"cve":"CVE-2019-9506","score":0.02691,"percentile":0.85887,"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."]}