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.
Published 2019-08-14 17:15:12
Updated 2021-11-04 15:58:19
Source CERT/CC
View at NVD,   CVE.org

Threat overview for CVE-2019-9506

Top countries where our scanners detected CVE-2019-9506
Top open port discovered on systems with this issue 53
IPs affected by CVE-2019-9506 62,224
Threat actors abusing to this issue? Yes
Find out if you* are affected by CVE-2019-9506!
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Exploit prediction scoring system (EPSS) score for CVE-2019-9506

0.11%
Probability of exploitation activity in the next 30 days EPSS Score History
~ 42 %
Percentile, the proportion of vulnerabilities that are scored at or less

CVSS scores for CVE-2019-9506

Base Score Base Severity CVSS Vector Exploitability Score Impact Score Score Source First Seen
4.8
MEDIUM AV:A/AC:L/Au:N/C:P/I:P/A:N
6.5
4.9
NIST
7.6
HIGH CVSS:3.0/AV:A/AC:L/PR:N/UI:N/S:U/C:H/I:L/A:L
2.8
4.7
CERT/CC
8.1
HIGH CVSS:3.1/AV:A/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:N
2.8
5.2
NIST

CWE ids for CVE-2019-9506

References for CVE-2019-9506

Products affected by CVE-2019-9506

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