vulnerability
Red Hat: CVE-2019-9506: CVE-2019-9506 hardware: bluetooth: BR/EDR encryption key negotiation attacks (KNOB) (Multiple Advisories)
| Severity | CVSS | Published | Added | Modified |
|---|---|---|---|---|
| 5 | (AV:A/AC:L/Au:N/C:P/I:P/A:N) | Aug 14, 2019 | Oct 9, 2019 | Jul 9, 2025 |
Severity
5
CVSS
(AV:A/AC:L/Au:N/C:P/I:P/A:N)
Published
Aug 14, 2019
Added
Oct 9, 2019
Modified
Jul 9, 2025
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.
Solution(s)
no-fix-redhat-rpm-packageredhat-upgrade-kernelredhat-upgrade-kernel-rt
NEW
Explore Exposure Command
Confidently identify and prioritize exposures from endpoint to cloud with full attack surface visibility and threat-aware risk context.