Android
CVE-2019-9506
HIGH
Vulnerability Assessment
| Weakness |
CWE
OWASP Top 10:2025
A04:2025 - Cryptographic Failures
ASVS 5.0
V11 - Cryptography Cryptographic controls
|
| Impact | CVSS score of 8.1 (HIGH). Attack characteristics: adjacent network attack vector, low complexity, no privileges required, no user interaction not required. |
| Exploit ScenarioDerived | Successful exploitation could compromise the high-severity affected system. |
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Alert meAnalysisAI
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. Rated high severity (CVSS 8.1), this vulnerability is no authentication required, low attack complexity. No vendor patch available.
RemediationAI
No vendor patch is available at time of analysis. Monitor vendor advisories for updates. Apply vendor patches when available. Implement network segmentation and monitoring as interim mitigations.
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Technical ContextAI · show details
This vulnerability is classified under CWE-310. 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. Affected products include: Google Android, Apple Iphone Os, Apple Mac Os X, Apple Tvos, Apple Watchos. Version information: version 5.1.
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- Exploit and PoC references, threat intelligence from 22 sources
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Severity by source
AV:A/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:N
Primary rating from NVD · only source for this CVE.
CVSS VectorNVD
DescriptionNVD
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.
Threat Intelligence Overview
NVD
CVE.org
EPSS
How this decision was reached
The engine reads each signal below and applies a fixed list of rules from top to bottom. The first rule that matches sets the recommended action – like a statement, every line is shown.
What every action level means
SSVC AssessmentENISA
Priority Score
Attack Technique
Code injection occurs when an application accepts user input and passes it directly into a language interpreter or evaluator without proper sanitization.
Affected Products (CPE)NVD
Adobe Flash Player before 13.0.0.292 and 14.x through 18.x before 18.0.0.160 on Windows and OS X and before 11.2.202.466
Integer underflow in the MPEG4Extractor::parseChunk function in MPEG4Extractor.cpp in libstagefright in mediaserver in A
Android 3.0 through 4.1.x on Disney Mobile, eAccess, KDDI, NTT DOCOMO, SoftBank, and other devices does not properly imp
Integer overflow in the SampleTable::setSampleToChunkParams function in SampleTable.cpp in libstagefright in Android bef
Apktool versions 2.9.1 and prior contain a path traversal vulnerability when processing Android APK files. Malicious APK
An elevation of privilege vulnerability in the Android system (art). Rated high severity (CVSS 7.8), this vulnerability
The AES-NI implementation in OpenSSL before 1.0.1t and 1.0.2 before 1.0.2h does not consider memory allocation during a
Use-after-free vulnerability in Adobe Flash Player before 13.0.0.292 and 14.x through 18.x before 18.0.0.160 on Windows
Use-after-free vulnerability in Adobe Flash Player before 13.0.0.292 and 14.x through 18.x before 18.0.0.160 on Windows
Android 1.6 Donut through 4.2 Jelly Bean does not properly check cryptographic signatures for applications, which allows
luni/src/main/java/java/io/ObjectInputStream.java in the java.io.ObjectInputStream implementation in Android before 5.0.
The Broadcom Wi-Fi driver in the kernel in Android 4.x before 4.4.4, 5.x before 5.1.1 LMY49G, and 6.x before 2016-02-01
GitHub PoC
Exploit-DB