CVE-2019-9506

unknown
Published — · Modified —
CVSS v3
CVSS v2
VIR risk

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.

Predictions

Exploit likelihood
20%
Patch ETA

Heuristic predictions, AS-IS, for prioritization only.

Mitigations

vendor Authored 2026-05-27

Vendor advisory: debian — https://security-tracker.debian.org/tracker/CVE-2019-9506

vendor Authored 2026-05-27

Vendor advisory: suse — https://www.suse.com/security/cve/CVE-2019-9506.html

OS impact

OSVersionStatusFixed in
suse slesaffected
debian debianbookwormfixed5.2.6-1
debian debianbullseyefixed5.2.6-1
debian debianforkyfixed5.2.6-1
debian debiansidfixed5.2.6-1
debian debiantrixiefixed5.2.6-1

References

Verify integrity in audit chain (admin only). AS-IS.