CVE-2019-9506
Blutooth BR/EDR specification does not specify sufficient encryption key length and allows an attacker to influence key length negotiation
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.
No summary for this CVE yet.
CVSS Vector Breakdown
Exploitability
AV:AAttack VectorAdjacent
AC:LAttack ComplexityLow
PR:NPrivileges RequiredNone
UI:NUser InteractionNone
Scope
S:UScopeUnchanged
Impact
C:HConfidentialityHigh
I:HIntegrityHigh
A:NAvailabilityNone
Weaknesses
Affected Products
huawei
commercial·CNaka huawei technologies, honor
Microsoft Corp
commercial·USaka microsoft corporation
redhat
commercial·USaka red hat
Apple Inc.
commercial·USaka apple, apple computer
Cisco Systems Inc.
commercial·USaka cisco, cisco systems
Bluetooth
oss-project
BR/EDREmbedded
ICS / OT / IoT and 148 more affected products View all →
Exploitability
Official Patch Available
Workaround Available
Attack Graph
Products CVE Techniques Tactics
Click technique nodes for MITRE ATT&CK details · drag to pan · Ctrl/⌘ + scroll to zoom, or go fullscreen.
MITRE ATT&CK
1 technique Collection
References
https://www.kb.cert.org/vuls/id/918987/
kb.cert.org
http://www.cs.ox.ac.uk/publications/publication12404-abstract.html
cs.ox.ac.uk
https://www.usenix.org/conference/usenixsecurity19/presentation/antonioli
usenix.org
and 54 more references View all →
Unlock Complete Vulnerability Intelligence
Get the full picture for CVE-2019-9506 and every CVE in our database. Create a free account — no credit card required.
Create Free AccountPlain-language analysis
Impact assessment and exploitation scenario in plain English
Attack graph visualization
Interactive attack path and kill chain mapping
Exploit details & PoC links
ExploitDB, Metasploit, GitHub PoCs with direct links
Nuclei scanner templates
Ready-to-use vulnerability scanner templates
Full remediation guide
Patch instructions, workarounds, and compliance impact
Interactive AI chat
Ask questions about this vulnerability in natural language
Related vulnerabilities
Semantically similar CVEs and attack patterns
REST API & MCP access
Integrate vulnerability data into your workflows