VYPR
High severity8.1NVD Advisory· Published Aug 14, 2019· Updated Jun 17, 2026

CVE-2019-9506

CVE-2019-9506

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.

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Affected products

324

Patches

Vulnerability mechanics

References

30

News mentions

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