CVE-2019-9506

HighCVSS 8.1/10Last modified Jun 17, 2026

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.

Metrics

CVSS 3.1 8.1/10CVSS:3.1/AV:A/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:N

Weakness enumeration

CWE-310CWE-327

Affected software

No affected versions have been published.

Timeline

Published
Aug 14, 2019
Last modified
Jun 17, 2026
NVD status
Modified

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CVE-2019-9506: High severity, CVSS 8.1 | Vulnix